Digital Wireless Home Surveillance Camera

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· 4CH digital wireless camera & DVR system
· Simple installation-no video cables required!
· Total digital wireless, no interferences, no privacy leak
· 7" LCD monitor 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
· Video output function for bigger monitor

Q:How to find the camera dead ends: This area is a little content is also basically invalid. You can understand this: he is absolutely below the corner, there can be their own myself, its perspective (apply medical biology in the term) and then do a isosceles triangle, the vertex is the camera, do this triangle vertical , That is, right triangle, and then you even if it is estimated that junior high school students will be considered! living comfortably without anybody's help!

Q:Monitor knowledge! 1.2 m × 20 meters of the corridor with a large angle of the camera the best?: According to my experience, the first with 6mm lens, the second with 3.6 or 4mm lens is better.

Q:Monitor the camera hemispherical gun shape which is good: So that can not use a "good" the difference between the two words. There is only a need for site installation.

Q:What is the meaning of the camera function heartbeat?: For example, after the information system has done single sign-on integration, it can keep the system's local login function in order to reduce the risk of system coupling. And then use the system "heartbeat" function to achieve the two users of the automatic switch, thus increasing the robustness of the system, to prevent the failure of the unified certification system caused by global paralysis. So what is the "heartbeat" function? The "heartbeat" function is a method of using periodic access to determine whether other system functions are normal.

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.

Q:Home monitoring system which brand is better: Home surveillance camera need to be easier to install and fixed, camera accessories to complete, do not need to buy some additional accessories to help fix.

Q:I said is the monitoring of the camera, not what home with the camera, you can monitor the leader can also record the software, or hardware did not?: There is a camera with a recording, or you can add their own under a microphone can be modified, and their modified a little trouble

Q:How to monitor the camera with the venue, what type of camera installed in what kind of site, the camera installed how much the number of lenses should be equipped with light board.: Production of the camera all know, whether it is LED light board or array light board, as long as the infrared light board are divided degrees. Commonly common are 30 °, 45 °, 60 ° and 90 °. Lens and light board with 30 ° with 12mm and 16mm, 45 ° with 8mm, 60 ° with 6mm, 90 ° with 3.6mm or 4mm.

Q:The working principle of the camera with infrared light: Infrared emission diode (IR LED) infrared lamp principle is: by the infrared light-emitting diode matrix composed of light. Infrared emission diode from the infrared radiation efficiency of high materials (commonly used gallium arsenide GaAs) made PN junction, plus forward bias voltage to the PN junction injection current excitation infrared light. Spectral power distribution for the central wavelength of 830 ~ 950nm, half-peak bandwidth of about 40nm or so, it is narrowband distribution, for ordinary CCD black and white camera can feel the range. The emission power of the infrared light emitting diode is expressed by the irradiance μW / m2. The maximum radiation intensity of the infrared diode is generally in front of the optical axis and decreases with the increase of the angle between the radiation direction and the optical axis. The radiation intensity is 50% of the maximum value of the angle is called the half intensity radiation angle, that is, half power angle. The radiation angle of the infrared light emitting diodes of different packaging process models is different.

Q:Can I monitor the camera directly on TV?: Bought the camera, connected to the power, the line connected to the computer, with the AV head, the TV can be transferred to the video state can be, as to how much money, hundreds of dollars it, depending on what kind of you The camera

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