COFDM Wireless Video Receiver 4Ch with DVR

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Item specifice:

Brand Name: Safe Guard Model Number: SG-CH4 Frequency: 300-800MHz/1.2G/2.4G/5.8GHz (optional)
Memory: 60G/120G, 4 channel 48 hours recording LCD monitor: 17 Customization: All features can be changed as your prefer!
Data encryption: AES / ALLTECH Basic scrambling Voltage: AC220V±20V, DC14V~DC16V Size: 520*430*210mm
Weight: 22kg Bandwidth: 2/2.5/4/8MHz (adjustable)

Product Description:

Model: SG-CH4

1) MPEG-2 video compression, DVD video quality; 
2) Modular design and highly integrated
3) 17" Standard samsung LCD screen;
4) Built in with 60G SSD memory;
5) Support 4 channels 48 hours continuously recording;
6) Can support RS485/RS232 and av signals transmission simultaneously;
7) Nobody can steal your video and audio because of its data encryption.
8) NTSC/PAL automatically adapt, support user adjustable;
9) Supports high-speed mobile NLOS ( Non Light Of Sight ) reception;
10) Adjustable working frequency,bandwidth,RF power and etc.
11) COFDM modulation, Stable signal reception;
12) Can custom made with HDMI/SDI hd interface output;

COFDM Wireless Video Receiver 4Ch with DVR

This picture is just for your reference, we can custom made different functionalities according you needs. 

Product Parameters


300-800MHz/1.2G/2.4G/5.8GHz (optional)


 60G/120G, 4 channel 48 hours recording

LCD monitor 


 RF Level Input


RF Interface


AV output




Power supply

AC220V / DC12V


2/2.5/4/8MHz (adjustable)



Data control interface

Standard RS232/RS485/TTL level,9600,8,N,1

RS232/RS485 data interface

Standard RS232/RS485 level, support 1200~115200


1/2,2/3,3/4,5/6,7/8 (optional) 

Guard Interval 

1/32,1/16,1/8,1/4 (optional) 

Video Output 

1 line PAL/NTSC analog video 

 Video Decoding

 ISO/IEC13818-2  MPEG-2MP@ML


720×576(PAL) , 720×480(NTSC) 

Lines of horizontal 

625 or 525 Line 

Audio Output 

Analog stereo left and right channels 

Data encryption 

AES / ALLTECH Basic scrambling 


AC220V±20V, DC14V~DC16V

Work environment


Built in Battery

30000mA, support 4ch 48 hours recording





Product Application

COFDM Wireless Video Receiver 4Ch with DVR

COFDM Wireless Video Receiver 4Ch with DVR

COFDM Wireless Video Receiver 4Ch with DVR

Our Services

One year free warranty;
Three months for free spare parts (Replacement parts will be charged after a year);
24-h technical guidance;
One-stop ODM/OEM solution;
We provide professional system design and construction;
We have over 15 years experience's study, design and manufacturing in wireless microwave transmission area;
We are the professional plant source,so we can provide you high quality in best price.

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- Inquire about price/MOQ

Q:Security monitoring equipment in the store to buy, then generally expensive?
Your price is certain. If it's not expensive, where will the profits come from?. But you have the best online shopping equipment buyers, the average price can be fair
Q:What should we pay attention to when we buy the security monitoring system?
First of all, to clear the positioning of their monitoring systemThat is, their monitoring system in the end to achieve what kind of requirements, we must have a clear understanding. For example, is the analog monitoring system, or network high-definition surveillance system?. Simulations are rarely used today, and we focus on network monitoring systems.
Q:What are the security devices?
4. background music and broadcasting5. explosion prevention and security inspection6. parking management7. patrol
Q:What are the main components of the global security system?
(8) perimeter alarm system;(9) elevator five party alarm system;(10) centralized management system for keysFrom the classification dependency relationship:Video surveillance subsystem;Alarm subsystem;Guard patrol system;Voice intercom subsystem;Audio-visual broadcast subsystem;Intelligent analysis subsystem;Perimeter guard subsystem;Location and tracking subsystem;Power environment monitoring subsystemFor security system, according to the different functions of the system, we divide the whole security monitoring system into seven layers - presentation layer, control layer, processing layer, transport layer, execution layer, support layer and acquisition layer. Of course, because of the increasing integration of devices, for some systems, some devices may exist in the system at the same time as multiple layers.1. presentation layerThe presentation layer is the most intuitive, and it shows the quality of the whole security monitoring system. Such as surveillance TV wall, monitor, treble alarm horn, alarm, automatic answering telephone and so on, all belong to this layer.
Q:How much is the charge for security monitoring?
You buy first, stock goods, should pay taxes and fees. Delivery installation can be done first in the construction of accounts receivable, and related subjects, to reduce inventory of goods, accessories can be assisted in cost accounting, labor costs. In construction, employee compensation payable. After completion of the project, the construction works will be carried out to confirm the income and the cost.
Q:Security monitoring, construction costs, how much is reasonable?
Usually in accordance with the 20% collection, according to the construction of the difficulty can be a certain coefficient.However, such a small project like you, if in full accordance with the proportion, not your loss is the loss of Party AIt's better to negotiate a reasonable cost
Q:What are the functions of security decoder, the main function and principle?
The pan head decoder refers to a pan head and a lens controller. Generally, the lens (camera) is mounted on the pan head, and the pan head can rotate up, down, left and right. The lens can zoom in and out (zoom), focus, change the aperture size and so on.
Q:What qualifications do you need for security?
Security engineering enterprise qualification is divided into three levels: level one, level two, level three. Level three is the lowest level. Enterprise qualification evaluation implementation progressive promotion principle.Security engineering business qualification certificate (hereinafter referred to as the qualification certificate) from the center of management qualification in anxie adopts the printing anti-counterfeiting technology unified design, issued by the certification agency in.The main contents of the certificate include security engineering, enterprise information and qualification information.
Q:What are the categories of security monitoring systems?
Yes, but we usually use Hikvision's integrated platform
Q:How to learn security monitoring equipment?
I think you should ask is third, because the first two are based and the need for professional development experience, there is no basis system must go through long learning and training can do program development.Third monitoring equipment installation and debugging, the threshold is relatively low. Only need to know the principle of the monitoring system, and what the monitoring system is composed of, how to implement, and then through the corresponding installation practice, you can master the simple installation technology.

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