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Product Description:

IR Camera CCTV Camera CM-K21-S114 1/4"SONY SUPER HAD CCD Ⅱ 420TVL Sony 3142DSP+643CCD IR Distance:35M
36pcs Ø5mm Leds
Dual Glass

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Q:What is the monitor for the video recorder?
There are four split, nine split, sixteen split, you can display 4,9,16 camera images on one monitor at the same time, or you can send it to the recorder.
Q:Monitor the camera from the appearance of how to distinguish is not infrared
Second, the power test: a small number of camera light bulbs are not infrared, is white, this need to power, and then block the camera on the light sensor, so that the lamp work together. (White light bulb when working, the light is white, the human eye can be seen. Infrared light bulb is issued by the infrared light, the human eye is almost invisible, but the camera output screen is illuminated)
Q:What is the power of the camera used for monitoring?
If all of the moving point, then the power supply per set of AC24V / 2A, each 50W, 31 * 50 = 1550W, that RVV2 * 0.75 power cord is not enough.
Q:Monitor the camera gray screen
3, video line problems. Video cable, video plug bad contact, faulty. Remedy: Remove the camera, get the host next to, re-create a video line to see the effect.
Q:Ccd monitor how the camera and computer connection
3. After the completion of the connection, the Internet to find a video software can start your video surveillance trip.
Q:What is the meaning of monitoring the focal length in the camera?
Surveillance cameras sellers do not understand the concept of a lot of focus, they tell you that the lens is a few millimeters, the a few millimeters is the focal length or lens caliber they do not understand, they only know to see far or see close.
Q:Monitor the flash indicator on the DVR panel
General panel will have a hard disk indicator, if it has been flash, that the hard disk is working (video), on behalf of normal
Q:The working principle of the camera with infrared light
First, the characteristics of infrared and infrared light light is an electromagnetic wave, with the same nature as the radio waves. Its wavelength range is from several nanometers (1nm = 10-9m) to about 1mm (mm). The visible wavelength is from 380nm to 780nm, the wavelength of visible light from long to short into red, orange, yellow, green, blue, blue, violet, the wavelength is shorter than the purple light, the wavelength of visible light is only a part of the visible light, visible light Called ultraviolet light, the wavelength is longer than the infrared light called infrared light. Infrared light wavelength between 780nm ~ 1000μm, located between the radio and visible light. Infrared light according to its infrared radiation mechanism is divided into semiconductor solid light (infrared emission diode IR LED) infrared light and heat radiation infrared light two. At present in the CCTV infrared camera in the former use more.
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:A camera for an hour how much space
This depends on the camera to shoot the quality of the picture, give you a camera 130W, each picture is 30K look, the picture is 10 Zhen, then every 10 is the screen, that is 300K, 1 hour 3600 seconds , Take out 1080000KB to remove 1024, that is, 1G look like
We are specializing in the manufacture of cctv cameras,color ccd cameras,B/W ccd cameras,color Dome cameras,B/W Dome cameras,Mini ccd cameras,Day/night ccd cameras,high speed cameras, Flying Sauce Cameras,wireless CMOS cameras,DVR ,DVR Board ,all-in-one camera,IP camera and lens and other safety protection video products

1. Manufacturer Overview

Location Shenzhen,China
Year Established 1993
Annual Output Value
Main Markets

China; Mid East;Western Europe
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Shenzhen
Export Percentage
No.of Employees in Trade Department 50 People
Language Spoken: Chinese
b)Factory Information  
Factory Size: About 5,000 square meters
No. of Production Lines About 20
Contract Manufacturing OEM Service Offered;Design Service Offered
Product Price Range Cheap, professional