Digital Wireless Home Surveillance CM-2

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Product Description:

· 4CH digital wireless camera & DVR system, no interferences, no privacy leak
· Simple installation- no video cables  required!
· 2.4GHz digital wireless receiver with integrated video recorder
· Support up to 32GB SD card or external 1TB mobile disk by USB2.0
· Support 4 cameras/ 24hours /7days non-stop overwrite recording
· Multiple recording modes: manual, schedule, and PIR activated
· 5meter night vision range
· Video quality: 4CH VGA 15fps, 1CH VGA 30fps
· Weather proof outdoor cameras with 300 m/1000ft transmission open range
· AV output function for monitoring in Quad mode


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Q:What does it mean to monitor the camera channel?
Channel refers to the physical location of the video input of the camera on the monitoring matrix or the DVR device.
Q:Monitor the camera feel infrared
Infrared lens, the day will be a little color, color lens will not! Now with the monitoring of the CCD are feeling infrared, only the lens does not sense the sense of infrared.
Q:Remote monitoring principle
When the alarm occurs, the alarm decoder will be linked to the alarm output device, and through the alarm decoder to enter the alarm signal RV-2000 video terminal, and transmitted to the monitoring center, the monitoring center of the video server to receive the alarm signal immediately after the sound signal, Record alarm events, such as hard disk video alarm operation.
Q:Monitor the camera lens focal length is what the situation according to the scope of the big focal point what the situation according to the clear
The smaller the focal length, the larger the field of view, the smaller the number of people in the corresponding picture;
Q:What is the difference between a wireless surveillance camera and a cable surveillance camera?
Wired relative to the wireless signal a little better, the wireless a little easier, the quality of a clear choice of cable is better.
Q:Monitor camera parameters how to see
Focal length (f): focal length is the distance between the lens and the photosensitive element, by changing the focal length of the lens, you can change the lens magnification, change the size of the captured image. When the distance between the object and the lens is very far, we can use the following formula: lens magnification ≈ focus / material distance. Increase the lens focal length, enlarge the magnification, can be closer to the vision, the scope of the screen is small, the details of the vision to see more clearly; if the lens to reduce the focal length, magnification reduced, the scope of the screen expanded, See the bigger scene.
Q:Monitor the farthest distance from the camera can be far, which manufacturers out
The effective distance of the surveillance camera is determined by the lens focal length used, and there is no direct relationship with the manufacturer. Surveillance cameras on the market effective monitoring distance is generally in the five meters to 150 meters.
Q:Outdoor surveillance camera that kind of good, how the price
1/4 inch Exview HAD CCD (progressive scan), 550TV line, 28 times optical × 12 times digital zoom, 44 million (PAL) effective pixels, viewing angle 2.1 ° -55.8 °; high sensitivity shooting, the minimum illumination 0.65 lux, high zoom speed and F1.35 brightness, can automatically switch wide dynamic, with 3D noise reduction and anti-shake function, electronic flip and mirror function ?? Alarm detection area adjustable ?? Adjust the automatic exposure response speed, Support external synchronization, up to 24 privacy area masking function, newly developed image signal processor.
Q:Monitor the camera has a video port, what is this mouth, then what machine, direct access to the TV can you?
Is BNC port, direct access to TV no problem, then the old TV video line is a BNC, one is the Lotus head, then LCD TV two are BNC; only the camera directly to the TV, then only on-site monitoring,
Q:Monitor the camera what is the zoom
The lens is equivalent to the human eye lens, if there is no lens, the human eye can not see any objects; if there is no lens, then the camera output image is a vast expanse of white, no clear image output, which with our home camera and camera principle Is consistent. When the human eye can not stretch the lens to the normal position, that is, people often say myopia, the front of the scene becomes blurred; camera and lens with a similar phenomenon, when the image becomes unclear , You can adjust the camera's back focus, change the CCD chip and the lens reference plane distance (equivalent to adjust the position of the human eye lens), you can blur the image becomes clear. Thus, the role of the lens in the closed-circuit monitoring system is very important. Engineering designers and construction workers should often deal with the lens: the designer according to object distance, imaging size calculation lens focal length, the construction staff often on-site commissioning, part of the lens is to adjust to the best condition.

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