What is a PTZ Camera? Cheapest USAFEQLO USA-A1 PTZ PTZ Camera and Digital PTZ Card

This review is devoted to the ways to control high-speed PTZ integrated cameras Speed Dome.

The consumption of high-speed PTZ cameras has grown dramatically in the market over the past 10 years. A significant decrease in the price of these devices, as well as an increase in their technical capabilities: speed, optical magnification, functionality, affects. Now the normal rotation speed during the installation of the "preset" reaches (often exceeds) 400 degrees / s, the optical magnification has long exceeded the 30-fold value, and some cameras even got the opportunity to track objects in their field of view on their own.

Modern prices for "domes" range from $ 500 to $ 600 for Chinese brands to several thousand euros for well-known Japanese, American or European brands. Unlike individual rotary mechanisms, where control is carried out by its own pair for each degree of freedom (mainly with an alternating voltage of 24 or 220 V), a telemetry receiver is integrated into the SpeedDome, which allows you to control the camera using just two wires (in the case of RS-485; some models require 4 wires for full duplex control) or over a video cable. And the SpeedDome IP video cameras do not require additional control wires at all, although they usually have the ability to work "the old fashioned way".

Controllers and Keyboards

The simplest and most "ancient" way to control a Speed Dome-camera is using a keyboard, as well as a separate stand-alone device with its own power supply. The lowest cost keyboard will control pan and zoom using buttons and RS-485 protocol only. Buttons are quite enough when you just need to set up cameras and then control, for example, presets. But if the operator needs to constantly control the cameras, the remote control will greatly slow down his work. For such cases, a remote control with a joystick will be much more convenient - it allows you to control the camera in two coordinates at once, the focal length of the lens, as well as the speed of rotation with one movement of the hand. The higher the cost of the keyboard, the more additional features it has (for example, controlling video recorders, displaying signals from video cameras and recorders on the built-in TFT monitor). Working with DVRs is limited only by the fact that they must be produced by the same company as the keyboard; there are no such problems with controlling video cameras - usually remotes support several protocols, which means that you can control cameras from different manufacturers. With the advent of IP video cameras, the question of remote controllers for them arose. Of course, almost all PTZ IP cameras have the ability to control via RS-485, however, dragging additional wires when there is already a high-bandwidth digital network is pointless. The only drawback of an Ethernet network based on copper UTP, which is the basis for 99% of IP video systems, compared to an analog one, is the small segment length from the device to the switch (about a hundred meters if you do not use optics).

PTZ camera capabilities

Two things can be said here. First, some camcorders have built-in advanced controls. A properly configured video camera constantly monitors with a maximum viewing angle. When the built-in detector detects movement, the camera zooms in on the area and "guides" the moving object as far as possible. At the moment of such tracking, the camera "does not see" the surrounding environment and cannot switch to another object without returning to its original position with a minimum zoom. Of course, not all cameras even have a built-in motion detector, let alone automatic tracking.

The second concerns only IP video cameras. It has already been said above that the Speed Dome IP camera can be controlled using either a regular remote control or an IP remote control. However, IP PTZ cameras are in some sense self-contained devices and have a Web server on board. Logging in from any computer through a web browser, you can get an image from the camera, configure its parameters and control the rotary mechanism and lens. It offers 2 methods - a simple one that imitates the buttons on the control panel and allows you to simultaneously control two coordinates, and an advanced one that differs for each manufacturer in detail. Here you control rotation and zoom using your computer mouse. By drawing a rectangle in any part of the camera window, you will force it to zoom in on this area, or by moving the cursor to the edge of the image, you will receive an arrow hint; which you can move the camera in the desired direction (at the left edge - to the left, at the right - to the right, and so on).

DVR control non-PC

PTZ camera control has long been an integral basic function of DVRs. Only very cheap and very limited functional DVRs can afford it. Cameras with non-PC DVRs are controlled in 99% of cases using the RS-485 interface. Some newer hybrid DVRs, which can work with both analog and IP cameras, may support control over IP. According to the control method, all DVRs can be divided into 3 types: controllers using the DVR's keyboard (from the front panel), controlling only the mouse (for DVRs where there is no keyboard) and DVRs that support both options. The first option is acceptable only for those who very rarely use manual control of PTZ cameras (cameras are configured to bypass "presets" or "tours" in automatic mode). In most cases, using the front panel of a video recorder to control a PTZ camera is a real torment, since you have to work only with buttons in a limited number: no 3D joysticks. Mouse control can also vary greatly. A simple option is an imitation of the same limited set of buttons from the front panel, it is not much more convenient. Other DVRs can use approximately the same mechanism that is described in the previous section and is presented mainly for IP video cameras. Of course, you will have to configure everything using the same buttons or the on-screen menu, but this is the only option for all recorders. Total: the mouse is good, the keyboard is not very good. The good news is that there are more and more mouse-controlled recorders, but the latter's internal software can vary greatly.

The control methods listed above have one common drawback. Any Speed Dome camera has 2 control speeds. The control speed in manual mode usually does not exceed even half the speed of camera rotation at the time of using the presets. At the same time, it is obvious that the higher the speed of such manual control, the less accuracy, accuracy of positioning the camera on the area or object of interest. It can be noted here that the camera is not used to all 100% of the possibilities it has, and the efficiency of its use could be higher. New computer interfaces and developments are called upon to cope with this task.

Software (PC-based DVR)

DVRs always outperform non-PCs in terms of capabilities. Firstly, new technologies, especially resource-intensive and complex ones, are easier to develop and debug on computers, and secondly, competition with DVRs based on embedded processors forces the same developers to constantly add new functions and capabilities, make their software more flexible and powerful. ... So what new do the developers of programs for video registration and control of PTZ cameras offer us? If we discard the variations associated with the interactivity of controls directly on the image, or the imitation of a 2D joystick, then we can separately distinguish 3 categories of new products (interfaces). The first is to add the ability to automatically control those cameras that do not have it initially, that is, control the camera using a motion detector in the software. Such detectors can be more powerful and advanced than those built into cameras. The second and third are associated with the use of at least one more video camera (overview), the field of view of which fully or partially coincides with the rotary one at the minimum value of the focal length.

Manual control

In this mode, the combination of the overview and PTZ cameras allows the operator to control the PTZ camera with one click of the mouse or, by highlighting a rectangular section of the image with the overview one, to get it optically enlarged using the PTZ camera. At the same time, 2 drawbacks of the interfaces described above disappear at once, control is carried out at a speed1 that is maximum available for a video camera (usually declared as the speed of positioning by presets), and the operator does not lose sight of the protected area - he sees the whole situation as a whole and its details with maximum optical zoom, so it can point the camera from one position to another as quickly as it could not with traditional interfaces.

The fact that the Speed Dome camera does not need to return to the survey position in order to select a new object also plays a role in the control speed, and this, as already noted, is the slowest part of positioning. When the camera is positioned without much zooming (almost without using the zoom), the speed increases significantly.

Automatic control

This refers to the same combination of overview and PTZ cameras. The motion detector analyzes the image from the overview camera and issues commands for the PTZ camera - now the control is fully automatic. Systems of this kind appeared many years ago, however, then they worked according to presets - each square of the overview camera image was assigned its own position, and as we remember, the Speed Dome can have up to 256 presets. However, now developers are using the capabilities of not only modern detectors, but also video cameras. The detectors are smart enough to transmit not just the coordinates of the object, but also the vector of its movement, since while the camera is turning towards the object, it may already be displaced. And cameras have the ability not only to work with presets, but also to execute direct commands for setting along certain coordinates; they are also fast enough. It should only be noted that not all Speed Dome cameras, even from the middle price range, will support these functions. Do not expect that the Chinese noname will be as fast and will have a fully implemented protocol, especially a borrowed one. If several objects appear in the field of view of the overview camera, the PTZ will switch between them, following each one for a set time. Today, some developers supply systems where simultaneous control of several Speed Dome cameras is possible, and almost unlimited combinations of panoramic and PTZ cameras, when you can have a live picture of what is happening in 360 ° around, while providing high resolution and detail of moving objects. It would seem that with an increase in resolution, when there are already digital video cameras with 5, 8 Mpx and more, the need for such a solution is not so high. But the optical zoom is still difficult to replace, and a combination of overview and PTZ cameras using, for example, 35x magnification gives the equivalent of a system resolution of more than 300 Mpx - digital cameras will not be able to achieve the same result soon. Again, the use of megapixel overview and PTZ cameras will always push this barrier forward. Of course, this system also has disadvantages. First, as mentioned, not all PTZ cameras are compatible, and not all of them are fast enough to track objects moving at high angular velocity. Secondly, the system increases in price (however, the cost is worth it - as well as any increase in functionality that increases the safety of the facility or your enterprise). Thirdly, the system requires calibration - setting the correspondence between the coordinates of the overview and PTZ cameras (although there are positive shifts here - for some cameras it is required to set only 9 anchor points, and the rest will be calculated by the system itself).

It can be noted in which direction the development of the technology of manual and automatic control should be expected:

Transition to megapixel survey and PTZ cameras and striving for higher resolution;
construction of panoramic images, composed of pictures obtained from a variety of survey cameras, where images of rotary ones are also inscribed. Thus, a single interactive scene of an object or its section is created. However, it will be incomplete without the ability to reproduce the archive in the same form (although this can be a serious load on the server);
improved performance of motion detectors. New technologies for tracing, scene and object recognition, improving the quality of tracing at night.
Of course, you should not rely entirely on the capabilities of the detectors. Don't skimp on video cameras, hoping that the detector will cope with both noise and low-resolution images. The general rule of thumb for any security system is that a system will be as bad as its smallest component. A cheap lens attached to an expensive camera, a cable with a poor quality connector, or any other component can take all your costs away.

Glossary

Speed Dome- high-speed dome PTZ camera. Fast compared to conventional slewing gears. Dome, since more than 90% of such cameras are designed in the form of a cylinder with a domed optically transparent casing that protects the optics and the mechanism from dust and moisture. Speed Dome cameras are also called integrated cameras, implying that all the necessary components are assembled in one body: the video camera itself, optics, a two-coordinate mechanism and a telemetry receiver.

Preset- the ability of the Speed Dome to be set to a preprogrammed position with the maximum available speed. Various modifications can memorize from 32 to 256 presets.

Tours(Tour, or Touring) - The ability of a PTZ video camera to execute a series of commands, such as a sequence of presets. The extended version assumes that the camera memorizes your actions with subsequent cyclic execution. Protocol is a set of commands for controlling PTZ cameras using a telemetry receiver. Usually large manufacturers use their own protocol, but they also necessarily integrate additional ones such as Pelco, which has become the de facto standard due to the openness of the manufacturer's policy. Small manufacturers use only such open protocols and implement (depending on their laziness or camera capabilities) only a part of the commands. PTZ is an abbreviation for Pan, Tilt and Zoom, respectively, the rotation of the horizontal, vertical and lens control. PTZ-camera - respectively an integrated camera with a rotary mechanism and a zoom-lens.

The Line video surveillance system controls PTZ cameras using an RS-485 interface converter. IP PTZ cameras are controlled by the system via Ethernet interface. Combined use of PTZ and overview cameras is possible, which makes it possible to automate the transition of a PTZ camera to the zone of motion detected. This function of the program is useful for protected objects with a large territory.
You can restrict access to PTZ control to any user. Just uncheck the box in its settings.

Supports major control protocols (PTZ):

Pelco D / Pelco P;
Lilin v. 1 / Lilin v. 2;
Samsung SCC-C;
Panasonic;

Panasonic New;
TOA;
ZC-NAF27.

Standard

By launching the widget, you can fine-tune the position of the camera and go to the preset. All possible presets have a preview mode.

Visualization of memorized PTZ camera presets has been implemented, which allows you to see the location of the camera before starting the transition to the selected preset. When saving a preset, the program automatically remembers a snapshot of the camera screen, which allows the user to visually determine the desired transition.

Advanced

When you hover the cursor over the center of the picture, a joystick appears. By holding down the mouse button, you can turn the camera in the direction of the joystick movement. The further the joystick is from the center, the faster the camera turns.

Click on the image to view

Control methods

PTZ cameras can be controlled using a mouse, joystick or USB remote control. There are also keyboard shortcuts.

An alternative to fixed cameras are pan / tilt / zoom cameras (otherwise known as PTZ cameras), named for their ability to pan left and right, tilt up and down, and zoom in. PTZ cameras accomplish this through a unique combination of pan, tilt, and zoom lens controls. The overall zoom capability of a PTZ camera is the sum of the digital and optical zoom values. Digital zoom uses electronics to zoom in and out, while optical zoom uses lens movement. The total zoom ratio of the camcorder can be calculated by multiplying the digital zoom and optical zoom. Camcorders require a keyboard and signal receiver to provide pan, tilt, and zoom capabilities. However, most PTZ dome cameras come with a built-in receiver.

Types of PTZ cameras

PTZ cameras are available for outdoor and indoor use, which adds to their versatility. Outdoor PTZ cameras have a rugged housing that is resistant to harsh weather conditions and are more reliable than indoor cameras. The reason for this is that they have to move a heavy case, sometimes equipped with IR illuminators. PTZ cameras for indoor use are often made with plastic housings and are therefore lighter.

One of the most recent evolutions of PTZ cameras is the popular PTZ dome camera. Dome cameras work in the same way as traditional PTZ cameras, but differ in that the pan / tilt device and control electronics are located inside the dome. The range of domes is extremely varied, from transparent or translucent to opaque, making them suitable even for special applications. PTZ dome cameras have several advantages over traditional PTZ cameras. The dome can move effectively in all directions, including 360 degrees for straight down viewing. Dome cameras have an Auto-Flip feature for viewing directly below it: when, upon reaching the mechanical stop, the camera unit automatically rotates 360 ° and continues in the direction selected by the operator.

PTZ Camera Features

In most PTZ cameras, algorithms can be created to automatically track from a given position along a specific route to continuously survey these areas. The number of preset positions varies depending on the make and model of the camera, but on average from 8 to 32. The ability of a camera to accurately return to a preset position differs depending on mechanics, electronics and software. In addition to presetting positions, PTZ cameras can be configured so that they only act in case of specific changes in the monitored area, for example, noise, movement. This is possible with the help of motion detectors built into the video camera or integrated with it. Thus, the recording process can be minimized and only for the most important events.

In addition, PTZ IP cameras can provide access to video information and camera control from anywhere in the world thanks to the ability to assign an IP address.

Another feature common to PTZ cameras is the ability to mask. This allows you to mask some areas in the camera's field of view, such as a window or door of one of the houses. The position of the mask can be interconnected with the movement of the camera so that when the camera is tilted or scaled, the mask moves and resizes accordingly. This allows the user to avoid litigation for breach of privacy and invasion of privacy.

Photos before and after masking

Translation by Hi-Tech Security.

This is a review of one of the cheapest pan and tilt cameras with ptz remote control, microphone, speaker and memory card. It works and spins, but I would not risk putting it on constant patrol. No optical zoom! I liked it, I recommend it for purchase.

An ordinary camera did not suit me very much, it was decided to buy a rotary one from ptz. The choice fell on the cheapest model from USAFEQLO. Included with the camera, I ordered a power supply and a 64GB memory card. I did not find a review of this camera on the site, which, with 2500 reviews on the product page, surprised me.

Order 6-08-19 from Russia, delivery to Tambov for a couple of days, a week and a half, the parcel was in the warehouse of the courier service and on August 21 it arrived in the region with a courier. The real time of delivery to a major city is 5-7 days according to reviews on the seller's page.

Package
The box is colorful and nice. The set includes a gasket for wall mounting, self-tapping screws with dowels, a sealed connection to an ethernet connector, instructions and for some reason a plasticine screwdriver. It is very sad that there is no template for installation - its cost is a penny, but the need is obvious.
Power supply from the seller with a long cord of more than 2m
Appearance and characteristics

Seller promises

HD 1080P Resolution
2.0MP High Definition image, Clear and fine images.Max Image size 1920 * 1080.
Audio Record
Can record the sound around the camera, Most Other Camera Not Support Audio Record.Clear listening effect, Save voice evidence, True sound reproduction, Clear detail recording, Help you record important sound evidence.
Motion Detection Alarm
The camera detects the moving person. Send a mobile phone alarm message.
PTZ Control
Can rotate 320 degrees horizontally and rotate 120 degrees vertically. The mobile phone can control the rotation angle of the gimbal and see the direction you want to see.
Two-Way Speech
Filter noise, clearer sound, real-time two-way speech, Easy to deal with various problems. Drive away the bad guys.
WiFi Link
Only need to connect to the wireless WIFI network, No plug-in network cable, Signal stability.
Mobile Video Surveillance
Support mobile phone iOS, Android system, Remote monitoring of mobile phones, You can view and monitor at any time.
IP66 Waterproof
IP66 waterproof.Professional waterproof design, Outdoor waterproof, Good sealing, No need to worry about rain.
JPEG Snapshot
Snapshot function.Snapshot function.Upload pictures from your phone.
Infrared Night Vision VIew
The Farthest IR Distance is up to 30M.
Day & Night
IR cut filter with auto switch.
TF Card
TF card slot, Maximum support 128g. Defult is not include TF card.
Must be 8GB, 16GB, 32GB, 64GB.
Most of the 128GB can not work, if you need, you can buy 128GB card from us.
We only make sure Our card and Kingsten, Sandisk orgional card 8-64gb can work well.
Card must be Class10 or more better.
Your TF card can work on PC not means can support this camera, we will not accept any dispute because of the card.
- Support ONVIF
Camera supports onvif protocol.
- Compression
Advanced H.264 / 5X video compression, Super low rate, high definition quality of image.
- Center Platform Aanagement SoftwareICSEE Pro or ICSEE.XMEye
When you use the phone APP contact the camera, it will have interference, when the camera far from the phone, this interference will be eliminate.
This item must use the APP to contact the wireless, can not use the Soft to contact the WIFI.
We found some buyer want use the old way contact the wifi, That is impossible !!!
Model Name USA-A1
System P2P Support
ONVIF Support
DDNS Support
Mobilephone Iphone, Android, windows, Blackberry
CMS Soft Support Windows System, 64 channel display
MicroSD Caed (Max 128G)
Support Alarm, 7x24 hours work
Internet Network protocol HTTP, UDP, SMTP, FTP, DHCP, DNS, NTP, UPnP
Wired RJ45 10 / 100MB Ethernet
Wireless WIFI (IEEE 802.11b / g / n) 2.4GHz
Wireless rate 150Mbps (Max)
Online users Max support 5 online visit
Code stream Double Code stream
Lens HD Lens
Sensor 1 / 2.7 "CMOS Sensor
Resulution 1920times1080 (2.0MP)
Lens Fixed: 3.6mm
Angle 65deg
IR-CUT Support
Video
Video compression format H.264 + / H.265X
Video frame rate 1 ~ 25fps
Resulution Main stream: 1920times1080, Auxiliary stream: 704x480
Image adjustment Brightness, contrast, saturation, chromaticity adjustment, 3.6mm lens.
Minimum illumination 0.4 LUX
Signal to noise ratio> 48dB
Audio
Audio compression format G.726 / G.711
Built-in microphone Support
External speaker Support
PTZ
Motor Built-in motor control
Rotation angle Level: 330 degrees, vertical: 90 degrees
Night Vision IR_CUT
Infrared night vision, color filter automatically switch
Night vision Support
Alarm
Alarm detection Motion Detection
Detection area Support 1 independent screen detection
Alarm notification iPhone, Android Alarm
Physical characteristics
Shape material ABS
Use environment Outdoor waterproof
Power consumption DC12V / 2A, Adapter is not include except you choose with adapter
Operating temperature Negative 20degC ～ + 50degC
Working humidity 10% ～ 80%
Size 170x115mm, main body
Weight Net weight: 0.5kg
Gross weight: 0.7kg
Parts
Manual, Bracket, Screws
Operating environment
Centralized monitoring of computer systems
Microsoft XP, Vista, Win7, Win8

Browser
Internet Explorer6.0,7.0,8.0,9.0,10, Firefox, Google, Safari, etc.
Certificate
Certification
3C FCC CE RoHS

The camera is small and lightweight. Departure from the wall about 15 cm.
The tail forks into a power cord, a rj45 connector with an activity indicator, and a reset button with a rubber plug. The indicator shines through the junction box, lights up when the camera is working and blinks when working over ethernet.
IR illumination at night shines noticeably with red lamps.
The pivot mechanism has stops and can rotate up to 330 degrees. Vertically, the manufacturer claims 90 degrees, but in fact the camera can look under itself and up to the visor. The rotation limiters are physical - when the extreme points are reached, an unpleasant crunch is heard.
The complete elastic band is not impressive, it tends to jam when closing the lid. There is no seal under the wi-fi antenna. It is very interesting how the camera will behave in autumn under heavy rains and in winter in frost. To protect against moisture, I plan to fill the antenna holes and the lid joint with sealant.
I found a little inner peace on the net.

Installation
Unscrew the 2 screws on the cover, which are closer to the mount. Insert the memory card. We straighten the gum.

For installation in brick / concrete, you need 3 plastic dowels 6 * 40 (if the wall is not made of sand), self-tapping screws with a flat clamping part and an outdoor junction box. It is better to throw out the complete self-tapping screws. To drill holes for the camera mount, you need to make a template from a sheet of paper (lean the mount against the sheet and mark). It is more convenient to mount the camera in the open state - this way the access to the self-tapping screws is better. Directly under the chamber is a junction box into which all connections are removed. For power, you need an extension cord or Poe splitter.

Customization
The camera can be connected via Lan or wifi. The initial lan configuration procedure is not clear. The wifi connection is described in the instructions. Download the iCSee application, open it, register an account through the application. We turn on the router and camera. We are waiting for the talking aunt. In the application, add a camera via wifi and set a password on the camera. Now, turning to the router, you can find the address of the camera and connect to it through a computer.
App on the phone
Access to the camera only through the Internet. Direct wifi does not work.
The viewing window allows you to move the camera (with a swipe) and enlarge (no digital optical zoom!) The picture. You can take a photo or cut a video. When you click on the microphone icon, you can shout at a gaping neighbor. The sound from a walkie-talkie is not very loud, like a phone speaker.
The archive of records highlights the triggers of the sensors, you can also view alarming photos or an archive from the cloud. You can cut a piece in the archive. The main disadvantage is that there is no adjustment of the viewing speed.

Settings
Through the phone, you can:
turn off the talking aunt, adjust the speaker volume.
Configure motion detection: types of triggering (just movement, presence of people in the frame, perimeter control), operating time of sensors, duration of the video, notifications on the phone about detection triggering
see the state of the flash drive
connect to the cloud to record alarming screenshots and videos from $ 1 / month for 3 days of storage
turn off permanent recording (leaving only alarm recording), turn on sound recording, change the codec (h264, h264 +, h265x), quality and duration of recording pieces
change router
see techinfo
update the firmware. Everything froze for me and I decided not to mess with it anymore.
reboot or reset to factory settings
There is a rather obscure option in the network settings - "AP mode of the access point". I am assuming this setting allows for direct connection to the camera. When the option is enabled, wi-fi is disabled, the camera remains accessible via ethernet, a new wifi network appears. The password for the network could not be found or could not be found.

Access from a computer
Not every browser will make friends with Chinese technology. I've had luck with firefox. You will need to install a plugin.
The home page provides an opportunity to watch a video or rotate the camera. Presets (camera positions) and tours (route by presets) are also set here. And they even work. Before power loss. Moreover, tours are saved in the camera, presets are not saved, and nothing is saved in the web interface.

Playback of the recording is tied to files; there is a search by time, you can view alarm recordings. To view the recording files, you must select. The "select all" button is not provided. In the attachment to the phone there is a timeline with alarm marks, but here there is an accelerated view and you can immediately download everything to a computer in h264 or avi.

images

In the settings section
schedule recording settings
settings for alarms and actions to them
system settings, you can adjust codecs, network and network services, picture parameters, osd parameters (text over the picture, dead zones), picture parameters (blc dwdr, etc.)
add. settings auto reboot, account management, reboot and reset
In general, there are many settings. From the useful for myself, I found the setting to adjust the brightness of dark areas on a sunny day (dwdr).
I could not fill in a bunch, but to load one by one too laziness

1 GB is allocated for screenshots that are created when moving in the frame. Recording is cyclical by default, overwriting old recordings. A complete 64GB flash drive includes 4-5 days of recording around the clock in default quality and default 12 frames per second. In my experience, 4 frames per second is enough for normal viewing and analysis of recordings. This video has already climbed 9 days while I'm waiting for the result.

Briefly impressions
I like the picture from the camera. At night, of course, it is not so good, but in the daytime you can read the numbers from 10-15 meters.
night with and without lighting.
The microphone is working fine. Ordinary speech is not audible clearly, but loud speech and individual screams can be heard remarkably. The built-in speaker allows you to "keep the conversation going" when needed. It's a pity there is no control output in the cell - it could be used as an intercom.
This is not audible during noise, but if the street is quiet, there are constant clicks and a humming background from the microphone. The seller said it was ok. I. The disc does not transmit the sound of the microphone, it somehow smoothes it out and the clicks are not heard. You need to download the file and listen
The camera is controlled conveniently, the delays are predictable, nothing jams. Application and web access complement each other. There is no normal timeline for viewing on the web. The application, in my opinion, is almost perfect: a nice interface for viewing the archive, but there is no rewind. Fine tune and shouldn't be in the app. So the question about the mode of the access point remained unresolved.
Minus 2:
1. In the camera, as I was not looking for, there is no pre-recording of an alarming event. The person is already in the middle of the frame while the sensor is triggered.
2. It's bad that it does not remember presets.
Of course, it's silly to expect the functionality of a high-speed PTZ camera from this toy. I would not hope for the durability of the drive mechanism, and therefore I do not advise putting it on constant patrol. If you need such functions, look towards rotary hikvision, but there the price is an order of magnitude higher. However, the ability to rotate the camera to where you park your car for an extra RUB 1,000 on top of the price of a regular camera is impressive.

PS: I will make amendments. When connected via ethernet to the camera, access from the phone application through the wifi network of the router appears, even in the absence of the Internet. It turns out that if you pick a password for the camera's wifi network, you can use it without a router and without the Internet.
I also noticed that the archive and access to the camera are faster via ethernet. I plan to buy +24 Add to favorites I liked the review +13 +26

PTZ (pan - tilt - zoom) - translated means panning, tilting and zooming, that is, approaching.

Rotary IP PTZ CCTV camera, with functions of remote control of pan, tilt, zoom.

IP PTZ control panel to control PTZ IP PTZ cameras

This function makes it possible to control the video camera remotely using the PTZ camera control panel, through a web browser, depending on the device model, directly through the menu of the playback DVR / NVR device or video server. Remote control, that is, control of a PTZ video camera, allows you to control by aiming at the desired area of observation, then zooming in or out of one or another area required for viewing. The area viewed by a PTZ camera can reach up to 10 square kilometers, depending on which camera is used and with what resolution, how high it is installed on the object. For example, when using the IP PTZ camera HTV-IP-PTZ2P36 with 2 (Mpix) megapixel resolution and 36x zoom, it is quite possible to observe an object located at a distance of 2 kilometers.

In different cameras, depending on the technology used, PTZ commands are transmitted using different technologies. The main standard for controlling PTZ cameras is the RS-485 interface / port with various control protocols, and almost all PTZ cameras have the ability to connect via this interface. The signal without repeaters of command signals from PTZ-remotes is delivered at a distance of up to 1200 meters. PTZ analog video cameras and HD-SDI Ex-SDI PTZ cameras can only be controlled via RS-485 protocol. In IP PTZ cameras, signals are transmitted over an IP channel, through which information flows from the camera to the receiving device: NVR, IP server, IP camera control panel, WEB browser interface. HD-TVI PTZ cameras, AHD PTZ cameras, CVI PTZ cameras have an additional control interface UTC-control (Up The Coax), that is, control is carried out via a coaxial cable (other names for this protocol: Hikvision-C and Coaxitron). UTC control allows you to transmit commands to control PTZ cameras over a coaxial cable through which the signal from the camera to the recorder goes, while the transmission distance of such signals is limited to 300 meters when using a cable no worse than RG-59.

In modern IP PTZ cameras, infrared illumination is installed, which helps the camera to work at night. Standard IR illumination reaches a range of 150 meters, but there is also a laser IR illumination, which beams with its beams at a distance of up to 400 meters. It is noteworthy that these rays are in the spectrum invisible to the human eye (850-940 nm), that is, they are not visible and harmless to the retina.

HTV has a full range of PTZ cameras of various designs: Dome PTZ, Mini Dome PTZ, budget Bullet PTZ cameras and supports a line of all standards: HD-TVI PTZ, AHD PTZ, CVI PTZ, IP PTZ, HD-SDI PTZ cameras.