Q:What is the number of lines that a surveillance camera needs to use?

3, the control line (it is the PTZ, the spherical camera control line, with a two-core dvvr line)

Q:Monitor the difference between the camera 720p and 1200 lines

720P is 1280 X 720 pixels short, usually also known as 100W like. Is a parameter of the clarity of the digital camera system.

Q:Does the surveillance camera itself have a record storage function?

But there is a class called the camcorder camera itself with a storage function, you can play through the menu video playback

Q:Monitor what is good for video recorders

Color it. From the quality point of view, basically what is called the brand, are very durable, not easy to bad.

Q:How to clean the surveillance camera

If there is oil, use a special cleaning solvent, a small amount of these early decontamination work.

Q:Home surveillance camera with which brand is good?

In addition to their own home, back to my parents to buy one, my parents live home, a year when the New Year to go back to see them, with their time less, with this monitor, I can see them every day old, you can Like the same as the micro-confrontation. not bad.

Q:Monitor host can not find the camera ip how to do?

Finally, the host can be set to a fixed IP IP try. Add the password when the protocol port address is filled. Also can not find the words: the camera and the host may not be compatible, there is no shared agreement, you need to change the equipment.

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:Monitor the type and purpose of the equipment

1, one machine, the role of dust and moisture, with its own shield, indoor and outdoor can be.

Q:Camera gun 4MM, 6MM refers to what?

Monitor the camera said 4mm, 6mm is the size of the camera to monitor the camera, the smaller the number of mm mm, the larger the area of the monitor, the wider the angle, but the distance is not far, mm the greater the number of monitoring the farther away , But the monitoring of the angle will be a lot smaller, the specific parameters can refer to the following table, I was monitoring camera manufacturers, if you need a camera can contact me, the user name is my phone, hope my answer can make you satisfied, If you still do not understand the phone can be consulted