4CH Home Security System DVR KITS with 4pcs Dome Cameras S-12

Ref Price:: $155.25 / pc

Loading Port:: Shenzhen

Payment Terms:: TT

Min Order Qty:: 5 Pcs pc

Supply Capability:: 20000 Pcs Per Month pc/month

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4CH Home Security System KITS CCD IR Series 4-CH Net DVR KITS 4pcs Dome cameras S-12 Security DVR kit Packing List:

1. 1×4CH H.264 Stand-alone DVR
2. 4×1/3 CMOS 800TVL Cameras (3.6mm lens)with bracket
3. 1×5CH Power Distribution Wire
4. 1×DC12V/5A Power
5. 1×IR Controller (Use on DVR)
6. 4×Video/Power cable (20M)
7. 1× SATA HDD (Optional ) Without HDD

Q: Monitor the camera why the black screen?: Fourth, the monitoring of the video signal line broken (including line damage, poor contact), but also cause a black screen

Q: 20 meters away with the number of mm monitor camera lens appropriate?: At the same time, the same focal length, length and width shooting range also with the camera CCD has a relationship. Charge - coupled Device, Charge - coupled Device. It is a semiconductor device that converts optical images into electrical signals. At present, most of the CCD chip used in the surveillance camera is 1/3 "and 1/4", that is, the target size is 1/3 inch and 1/4 inch. CCD target surface size, CCD and lens with the situation will directly affect the size of the field of view and image clarity.

Q: What does it mean to monitor the camera channel?: Such as: ordinary hard disk video recorders support 16 video signals, so that the back of the hard disk video recorder has 16 video input interface, the channel refers to the physical location of these video interfaces, generally from left to right sort.

Q: Monitor the camera what models: Longitudinal and under the "and too" series for the industry's top ten users recommend the brand. Product quality and cheap, trustworthy! Longitudinal and was with the major government, military, schools, enterprises and institutions are all cooperation.

Q: What is the minimum illuminance indicator of the surveillance camera?: IRE Level: The maximum amplitude of the video output of the CCD camera is generally set at 100IRE (or 700 mV), and a 100IRE video indicates that you can fully drive a monitor to show the best brightness and contrast image quality. 50IRE video shows only half the contrast, 30IRE (or 210 millivolts) that only 30% of the original amplitude, usually 30IRE is the lowest performance available image value. So there is no indication of the lowest illuminance results of the IRE grade and are not actually comparable. Finally, it is the camera's special function settings.

Q: What kind of surveillance camera is good: The aperture is large, the image will be relatively clear), the aperture (the greater the aperture, the lower the light the better the imaging effect), if no lights at night, then the infrared function, you do not have to consider the PTZ. According to these parameters to sell security shop can buy the right

Q: Zhongwei HD monitoring system IP address is not how to do: Also may also be connected to the camera cable disconnection (usually bad contact or broken network), or the camera power cord circuit (the same as above), check

Q: What is the difference between monitoring cameras CCD1 / 3 and 1/4?: CCD chip has developed a variety of sizes: the current use of the majority of the chip 1/3 "and 1/4". In the purchase, especially when the camera angle is more stringent requirements, CCD target surface size, CCD and lens with the situation will directly affect the size of the field of view and image clarity. 1 inch - target size is wide 12.7mm * high 9.6mm, diagonal 16mm. 2/3 inch - target size is wide 8.8mm * high 6.6mm, diagonal 11mm. 1/2 inch - target size is wide 6.4mm * height 4.8mm, diagonal 8mm. 1/3 inch - target size is wide 4.8mm * high 3.6mm, diagonal 6mm. 1/4 inch - target size is wide 3.2mm * height 2.4mm, diagonal 4mm.

Q: Monitor the hard disk on the recorder is what format without formatting: Some video recorders have several hard drives. A record after the automatic record in the next hard disk. After the hard disk, you can remove the archive, put on a new one. You can not remove, then a few hard disk cycle recording, and the earliest images erased.

Q: Monitor there is a camera monitor can not see, but the playback can see, how is it?: 1, the composition of the monitoring system principle, front-end camera ---- monitoring host ---- monitor. The camera will collect the signal to the monitoring host, monitor the host output video signal to the monitor

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
Range
Reference
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