PTZ surveillance cameras - controls, specifications and features. The concept of a PTZ video camera Do-it-yourself ptz camera control

PTZ - the camera has a robotic mechanism with a built-in electronic-mechanical drive for video surveillance control, which controls the rotation and tilt of the device. PTZ - abbreviation (Pan Tilt Zoom), means that the camera is controlled remotely, and the camera itself has a zoom function. The optical zoom remotely changes the angle and field of view of the lens (enlarges / reduces the observed object). The cameras are controlled using a remote control or special software / hardware (if the equipment is connected to the network protocol).

Tracking Automation

An innovative hardware program is installed in the firmware of the PTZ camera. Through this software, the modulation of pixels in the image is controlled, which is transmitted and then sets the device in motion. The tracking function (tracking/turning) of the object, due to movement, changes the pixels and therefore the device focuses on the center of their fluctuations. Next, PTZ estimates the distance at which the tracking object is located and its dimensions. When the moving object has left the field of view of the video equipment, the device returns to its original position or to the one that was pre-programmed when the initial setup was carried out. This procedure will start again when the camera registers other changes.

Kinds

Analog CCTV cameras. After digitization (processing by a digital processor) of the resulting image, a special signal is sent to the electric converter. It, in turn, modulates these signals to analog (PAL / NTSC). The device is connected to a video server or DVR. To organize the control of equipment, during installation, another special cable is attached. The main disadvantages of such equipment for video surveillance are the unsatisfactory resolution of the received images, as well as their deterioration during the transmission of a special signal.
Digital IP video surveillance cameras. The processed image is transmitted digitally via the IP/TCP protocol. This data is sent to the IP registrar or IP server (video). Management together with data transmission is carried out on a single cable. Higher image resolution is achieved when compared with analog cameras.

Design options

Street dome hemisphere or Speed Dome. Exclusively all components of the device (electronics and mechanics) are placed in a sealed hemisphere. Thanks to this placement, the penetration of dust particles and moisture into the housing is completely prevented. It also increases the level of protection against vandals. The temperature regime during the operation of such devices is: -50 ° - + 60 ° С.
Outdoor dome spherical PTZ. A similar hemisphere model, but the difference is a more powerful infrared illumination. It has a high degree of fault tolerance, that is, it excludes the effects of moisture, dust and has protection against acts of vandalism. The temperature regime of equipment operation ranges from -40° to +60°С.
Rotary body PTZ (indoors). The moving units of the chamber are open, so the mechanical elements interact with the external environment. As a result - low protection against the influence of dust and moisture. The operating temperature of the device ranges from 0° to +55° С.
Spherical dome PTZ (indoor). It is intended for installation inside buildings and structures, as it requires the absence of low temperatures, as well as high humidity and dust.
The outdoor robotic PTZ is a hybrid of a motor drive and an outdoor camera. At the moment, the dome camera has replaced the robotic camera from the market. Accordingly, the latter is rare.

General characteristics

optical zoom;
digital zoom;
pan control;
tilt control;
audio signal transmission;
autotracking;
continuous rotation;
temperature control;
built-in memory cards;
round the clock video surveillance.

The quality of the transmitted image, detail, sound and a set of additional video surveillance functions depend on the model and purpose of each individual device.

Extended functionality

sound transmission;
bypass records;
patrol along the route;
connection of external devices;
chamber temperature control (for extreme environmental conditions);
weather protection (wind, rain, snow);
integration of various intelligent applications.

Areas of use

premises;
open area.

Thanks to the built-in heating of internal and external components, as well as a sealed housing, the dome camera can be used in areas with any maximum temperatures and various climatic conditions. Some models can be operated in places where human presence is impossible due to the impact of hazardous factors. For example, at the enterprises of the nuclear and chemical industries. And thanks to the optical zoom (zoom), the devices are actively used for videoconferencing and negotiations.

Also PTZ control is popular in TV production. Used on professional studio cameras for robotic control.

Setting procedure

PTZ cameras are used in two modes:

fixed;
mobile.

Working in a fixed (steady) video surveillance mode, the device (even dome equipment) is always statically directed to the monitored surveillance area. As a rule, without camera position control (a rotary function is present), but with a possible remote reconfiguration, if necessary.

When working in mobile video surveillance mode, the angle of the direction of the device periodically changes to expand / narrow the point of view and detail the necessary objects.

As a rule, customers have a technical task or a rough idea of where the camera should be, what zones it should be aimed at, the frequency and route of movement. All options for video surveillance and control are individual.

After installation of video surveillance, it is required to configure the camera according to the terms of reference. It doesn't matter whether it's a PTZ camera or a static one, a dome or a conventional one, outdoor or indoor - the setup process is almost identical in all cases. Analog cameras are configured in the same way as digital IP cameras. It is only worth noting that digital IP cameras can also be configured through the DVR and through the software / hardware that is pre-installed on the computer.

Setup and programming is usually done by CCTV installers.

How to set up an analog PTZ camera

Connecting the camera to the recorder.
Information setting of operating modes.
Select the required monitoring channel.
Individual settings for each PTZ monitoring channel.
Specify the control protocol (depending on the one supported by the camera).
Select the baud rate value.
The task of the stop bit parameters (transmitted to separate information).
The choice of method for detecting errors in the transmission of information.
The task of the IP address of the device for the registrar (connection is established through it).
Specifying the mode and schedule of camera movements.

For remote control of IP PTZ-surveillance cameras are used:

wireless infrared remote control;
mouse;
special software (which adds the ability to automatically control cameras);
wired USB remote control;
control via Ethernet interface (for high-speed data transmission by cameras);
remote control keyboard with 3D joystick.

For the equipment of the control and video surveillance system, for any territory, the best option would be a rotary dome PTZ IP video camera. It is the dome IP camera that is resistant to aggressive environments, has convenient control and allows you to control even the largest area without leaving blind spots. The dome camera and its various variations are the most popular type of PTZ cameras.

The Line video surveillance system controls PTZ cameras using an RS-485 interface converter. IP PTZ cameras are controlled by the system via the Ethernet interface. Sharing of PTZ and overview cameras is possible, which allows you to automate the transitions of the PTZ camera to the zone of detected motion. 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.

Support for 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.

Implemented visualization of stored PTZ camera presets, which allows you to see the location of the camera before starting the transition through the selected preset. When saving a preset, the program automatically saves a screenshot of the camera, which allows the user to visually determine the desired transition.

Advanced

When you hover over the center of the picture, a joystick appears. By holding down the mouse button, you can rotate the camera in the direction of the joystick movement. The farther the joystick is from the center, the faster the camera pans.

Click on image to view

Control methods

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

20.03.2018

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Wants to interest You fresh news.

Oh modern systems surveillance video and how to set them up . (for Dummies))

One of the features is the ability to controlPTZ cameras. (see prices)

To date, many buyers of PTZ AHD cameras are facing a problem.

Your recorder is a multifunction device.

One of the features is the ability to control PTZ cameras.

How to connect and configure AHD PTZ camera via analog DVR?For comparison, it should be taken into account that the IP rotary PTZ camera does not require additional configuration.AHD PTZ camera is connected via RS 485 interface, and this imposes certain difficulties.

Therefore, today's sketch will be devoted to the answer to this question.
AHD PTZ PTZ camera, when connected to a DVR recorder, requires configuration according to the instructions for the camera.

Since there are a lot of PTZ cameras, no one can give a universal instruction.
But despite this problem, we can suggest what you need to pay attention to in your instructions in order to quickly set up the camera.
Considering that everything is connected, namely the PTZ camera shows the image on the DVR, and is connected to the RS 485 A/B connector.
You can start manual DVR setup. Go to the DVR menu, Settings and press PTZ.

Dthen we adjust the control settings as the instructions for your PTZ camera say.
Pay attention to what items the DVR requires to set.
Your instruction has data to fill in.
It is necessary to select the protocol, Baud rate - Bit raid.
In cases of data loss due to poor isolation or interference, the bit-raid speed can be reduced.
Date bit always 8. Stop bit 1. No parity. Everything else changes depending on your instructions.
Be careful. If one of the points is violated, the registrar will not allow you to control the PTZ camera.

If you have set everything correctly, then please go to the channel that broadcasts it. And start controlling the PTZ camera.

If your CCTV system has more than one PTZ camera, then to avoid simultaneous actions of several cameras. Because there is only one A/B port.
You need to change the number in the settings of the camera itself. So that it does not match with another PTZ camera.
Some PTZ cameras are equipped with external channel switching. For instance.

Knowing all these nuances, it will not be difficult for you to set up a PTZ - PTZ camera on your DVR recorder.
That's all. Enjoy your CCTV system.
Always happy to help old and new customers.

In the next article, we will cover setting up cruise control and motion detection for PTZ cameras.

Came briefly into the hands of the PTZ (managed) camera CNB-M1360PL. This type of camera is controlled by Rs-485 interface, usually using the Pelco-D protocol. Of the control options, the protocol supports: panning, tilting vertically, zoom, focus, iris, OSD (on-screen menu), various settings and various other features. But not always all of the above may be present on the selected camera, the camera that fell into the hands of the available ones: zoom, focus and on / off.

In the article I will share my experience of communicating with this camera, a description of the Pelco D protocol, a program for checking such cameras, and an example of implementing a camera control code for Rs-485 using the Pelco D protocol.

Larger view of the camera.

This, one might say, is a modular, without a case video camera, it is one of the cheapest and most affordable, the average price is around 6000 rubles (at the time of writing the article on 11/04/2017). True, it is without a turntable in the kit, which is a little sad for the first acquaintance with such cameras. The camera is equipped with 12x optical zoom and up to 120x digital zoom, auto focus, day/night mode switching and other standard features for custom video cameras. From the control on this camera is available: zoom, focus and on / off.

It can be equipped with an OSD control board for the camera menu, on which there is also a BNC video output connector, connectors for connecting power and Rs-485 lines, and a UART-Rs485 interface converter. In this case, only the Tx line with a logic level of 5V goes to the camera.

In the photo of the control board, top view, 1 pin is signed on the connector.

The on-screen menu is controlled by 5 buttons via the ad-key interface, which I have already considered using the example of a simple modular video camera -. The button connection scheme is slightly different from the one drawn earlier, but the meaning is the same.

The buttons in this camera are responsible not only for navigating the on-screen menu, but also for controlling zoom and focus.

In the on-screen menu, in addition to the image settings, you can select one of the two control protocols Pelco D or DXP and set the camera number for its addressing on the Rs-485 line. On one line, you can put several cameras with the same numbers to control them simultaneously or with different numbers for separate control. Interface settings: speed 2400 and standard 8N1. Other cameras may have different speeds, but they are in the standard range of 2400 to 115200.

Pelco D

Brief description of the Pelco D protocol.
Packages of 7 bytes are sent to the cameras from the remote control:

Checksum - 1 byte is equal to the sum of 5 bytes: from 2 to 6.

The Pelco D protocol can send 15 standard commands to control cameras, it can be used to remotely configure cameras (but not all cameras support this or their manufacturers use non-standard / custom commands and carefully hide them) and control the OSD menu (also not all cameras support). Because the copy on hand supports only a limited set of standard commands, then I will not consider additional options for remote camera configuration.

Standard commands:

	bit 7	bit 6	bit 5	bit 4	bit 3	bit 2	bit 1	bit 0
Team 1	sense	saved	Reserved	Auto/Manual Scan	Camera on/off	Iris Close	iris open	Focus Near
Team 2	Focus Far	zoom wide	zoom tele	Tilt down	Tilt Up	pan left	pan right	Always 0

The Sense bit is shared with the Auto/Manual Scan and Camera on/off bits.

I note that after turning on commands for movement along the axes or focus and zoom, the camera will move until it reaches the end position. You can stop the movement with the "stop" command.

On the Internet you can find a detailed description of the Pelco-D protocol in English.

When working with the camera, I connected it to a computer through a 2-dollar USB-Rs485 converter (in the first photo in the lower right corner), built on the basis of a USB-UART ch340 interface converter and a UART-Rs485 MAX485 converter. This, the cheapest converter, does not have galvanic isolation and only 2 outputs Rs485 A + and A-, there is no common wire! When connecting equipment via 485 lines, it is desirable to use galvanic isolation and also connect the converters with a common wire, because if the power circuits of the devices are not connected by them over long distances, the devices may not work correctly, malfunction or burn out. What happened to me, but with a wire length of ~ 60 cm. The converter was connected to the computer, and the camera was powered by a laboratory power supply, but the power supply did not have a ground wire (I forgot that the PSU used does not have a ground on the power plug, all other laboratory equipment and a computer at the workplace have), which turning it on and off caused the MAX485 chip to burn out in the Chinese converter. Be more careful and, better, do not save on converters and wires.

Utility for testing cameras with Pelco-D protocol

To work with the camera, or rather check its functionality, I wrote a simple utility.

When you connect an interface converter to a computer in the computer, a new virtual port appears (depending on the converter). You can connect to it in the program by first setting the port speed required for the cameras used. The program provides the ability to control the camera through command bits, prescribe the message manually and the minimum standard functionality for turning the camera, controlling its zoom, focus and aperture.

The program uses the standard settings of the 8N1 COM port (8 bits, no parity, 1 stop bit). The utility does not control the control lines of the COM port (RTS and DTR).

Code Example

An example of implementing a code for controlling a PTZ camera using the Pelco D protocol will look like this:

Unsigned char ptz_camera_adress; // camera address // sending data via the Rs-485 line // input: *data - pointer to the array of data to be sent void ptz_camera_send_data(char *data) ( rs485_mode_send_data(); while (*data) ( send_uart(*data); + +data; ) rs485_mode_received_data(); ) // send a message to PTZ cameras // input: adress - camera address, cmd1 and cmd2 - commands 1 and 2, data1 and data2 - data 1 and 2 void ptz_camera_data_send(unsigned char adress,unsigned char cmd1, unsigned char cmd2, unsigned char data1, unsigned char data2) (char ptz_camera_txBuff; ptz_camera_txBuff = 0xFF; ptz_camera_txBuff = ptz_camera_adress; ptz_camera_txBuff = cmd1; ptz_camera_txBuff = cmd2; ptz_camera_txBuff = data1; ptz_camera_txBuff = data2; ptz_camera_txBuff = ptz_camera_adress + cmd1 + cmd2 + data1+data2; ptz_camera_send_data(ptz_camera_txBuff); ) // camera on void ptz_camera_on(void) ( ptz_camera_data_send(ptz_camera_adress,0x88,0x00,0x00,0x00); ) // camera off void ptz_camera_off(void) ( ptz_camera_data_send(ptz_xera_adress,0,0x00); 0x00,0x0 0.0x00); )

rs485_mode_send_data()- switching the Rs-485 module to data transmission
send_uart(char data)- the function of sending data via UART
rs485_mode_received_data()- switching the Rs-485 module to receive data

This is a review of one of the cheapest cameras with a rotary mechanism, 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 to buy.

The usual camera did not suit me very well, it was decided to buy a rotary camera with ptz. The choice fell on the cheapest model of the manufacturer USAFEQLO. Complete with the camera I ordered a power supply and a 64GB memory card. I didn’t find a review of this camera on the site, which, given the presence of 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 she arrived in the region with a courier. The actual delivery time to a major city is 5-7 days according to reviews on the seller's page.

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

The 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.
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. Default is not include TF card.
Must be 8GB,16GB,32GB,64GB.
Most of the 128GB can't 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 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 buyer some 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
HD Lens
Sensor 1/2.7" CMOS Sensor
Resolution 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
Resolution 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
Detection area Support 1 independent screen detection
Alarm notification iPhone,Android Alarm
physical characteristics
Shape material ABS
Use outdoor waterproof
Power consumption DC12V/ 2A
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 light. Departure from the wall about 15 cm.
The tail branches into a power cord, an rj45 connector with an operation 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 via ethernet.
IR illumination at night noticeably burns with red bulbs.
The swivel mechanism has limiters and provides rotation up to 330 degrees. Vertically, the manufacturer claims 90 degrees, but in fact the camera can look under itself and up to the visor. Turn limiters are physical - when extreme points are reached, an unpleasant crunch is heard.
The complete rubber band is not impressive, it tends to wrinkle when the lid is closed. There is no seal under the wi-fi antenna. It is very interesting how the camera will behave in the autumn under heavy rains and in the winter in frost. To protect against moisture, I plan to fill the antenna holes and the joint of the cover with sealant.
I found some inner peace on the net.

Installation
We unscrew the 2 screws on the cover, which are closer to the mount. Insert a memory card. Straighten the rubber.

For installation in brick/concrete, you will need 3 x 6x40 plastic dowels (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 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). It is more convenient to mount the camera in the open state - this way you have better access to self-tapping screws. Directly under the chamber is a junction box into which all connections are removed. For power, you need an extension cord or Poe splitter.

Setting
The camera can be connected by Lan or wifi. The initial setup procedure for lan is not clear. WiFi connection is described in the instructions. Download the iCSee application, open it, register an account through the application. Turn on the router and camera. We are waiting for the talking aunt. In the application, we 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.
Application on the phone
Access to the camera only through the Internet. Doesn't work directly over wifi.
The viewport allows you to move the camera (with a swipe) and enlarge (there is no optical digital 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 like from a walkie-talkie is not very loud, about like a phone speaker.
The archive of records highlights the triggering of sensors, you can also view disturbing photos or an archive from the cloud. In the archive, you can cut a piece. The main disadvantage is that there is no speed control.

Settings
Through the phone you can:
turn off the talking aunt, adjust the speaker volume.
Set up motion detection: trigger types (just motion, presence of people in the frame, perimeter control), sensor operation time, video duration, notifications on the phone about detection triggered
view flash drive status
connect to the cloud to record disturbing screenshots and videos from $1/month for 3 days of storage
turn off continuous recording (leaving only alarm recording), turn on sound recording, change codec (h264, h264+, h265x), quality and duration of recording pieces
change router
view technical info
update firmware. I got stuck and I decided not to mess with it anymore.
reboot or reset to factory settings
There is a rather murky option in the network settings - "Access Point AP Mode". I guess this setting allows you to connect to the camera directly. When the option is enabled, wi-fi is turned off, the camera remains available via ethernet, a new wifi network appears. The password for the network could not be guessed or found.

Computer access
Not every browser will make friends with Chinese technologies. I've had good luck with firefox. You 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 through presets) are also set here. And they even work. Until power loss. Moreover, tours are saved in the camera, presets are not saved, and nothing is saved in the web interface.

Recording playback is tied to files, there is a search by time, you can view alarm recordings. Recording files must be selected to view. There is no "select all" button. The application to the phone has a timeline with alarm marks, but there is a fast view and you can immediately download everything to your computer in h264 or avi.

images

In the settings section
schedule recording settings
alarm settings and actions to them
system settings, you can adjust codecs, network and network services, picture settings, osd settings (text over image, dead zones), picture settings (blc dwdr, etc.) You can use
add. settings auto reboot, account management, reboot and reset
In general, there are many settings. From useful for myself, I found a setting to adjust the brightness of dark areas on a sunny day (dwdr).
I couldn’t fill in a bunch, but I’m too lazy to load one at a time

1 GB is allocated for screenshots that are created when moving in the frame. Recording by default is cyclical with overwriting of old records. The bundled 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 climbed for 9 days while waiting for the result.

Brief impressions
I like the picture from the camera. At night, of course, it is not very visible, but during the day from 10-15 meters you can read the numbers.
night with and without lighting.
The microphone is working fine. Normal speech is not intelligible, but loud speech and individual cries are heard remarkably. The built-in speaker allows you to "keep the conversation going" if necessary. It's a pity there is no control output in the chamber - it could be used as an intercom.
With noise, this is not audible, but if it is quiet outside, constant clicks and a buzzing background come from the microphone. The seller said it's ok. Ya.Disk does not transmit the sound of the microphone, it somehow smooths it out and no clicks are heard. Download the file and listen
The camera is controlled conveniently, delays are predictable, nothing sticks. Application and web access complement each other. The web doesn't have a normal timeline for browsing. The application, in my opinion, is almost perfect: a nice interface for viewing the archive, but there is no rewind. Fine settings and should not be in the application. So the question of the access point mode remained unresolved.
Cons 2:
1. In the camera, as I did not look for, there is no pre-recording of an alarm event. The person is already in the middle of the frame while the sensor works.
2. It's bad that it doesn't remember presets.
Of course, it is foolish 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 turn the camera to a car parking space for an additional 1000 rubles to the price of a regular camera is impressive.

PS: I'll make corrections. 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 up the password for the wifi network of the camera, you can use it without a router and without the Internet.
I also noticed that through ethernet the operation of the archive and access to the camera is faster. I plan to buy +24 Add to favorites Liked the review +13 +26

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