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Single Channel Active Power-Video-Data Transmitter and Receiver (VB303T&R)

Single Channel Active Power-Video-Data Transmitter and Receiver (VB303T&R)

Product General Information

Place of Origin: Hangzhou, China
Brand Name: Chinasky
Model Number: VB303T&R
Certification: CE, FCC, RoHS

Product Business Terms

Minimum Order Quantity: Negotiable
Packaging Details: Paper box
Delivery Time: 5-12 working days
Payment Terms: T/T, L/C, Paypal, Western Union, MoneyGram, Cash
Contact Us+86-15372048068
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Adopt differential signal transmission with excellent anti-jamming ability
Save project cable expenses, it can complete the transmission of video, power supply and control signals on this line only with one Cat-5 unshielded twisted pair wire
It can provide stable DC 12V power supply for the headend camera or other electro-equipments only to provide a DC 36V power supply at the receiving terminal (master control room) in the whole transmission system without providing another power supply for the camera and other DC 12V electro-equipments and realize remote power supply.
Built-in transient suppression protection
The farthest transmission distance can reach 1500m when VB303R is used with VB303T (this series shall be in matched use and shall not be used with other types of transmitter)

The transmission distance has relation with the total power of the camera and other headend equipments, for the details, please refer to the following table:

Loading current
Farthest transmission distance   Remarks
100mA or below 1500m These data are the measured distances with standard Cat-5e twisted pair wire. The transmission distance will be directly affected if the used wires are in poor quality.
200mA 1200m
300mA 800m
400mA 600m
500mA 400m


Technical specifications:

Single Channel Active Power-Video-Data Transmitter and Receiver (VB303T&R)
Video Format NTSC, PAL , and SECAM 
Frequency Response DC to 8MHz
Attenuation 0.5dB typ
CMRR 60 dB 
Impedance Coax, Male BNC 75 ohms 
RJ45/Terminal Block 100 ohms
Working environment Working Temperature   -10℃ to +70℃
 Storage Temperature   -30℃ to +70℃
Humidity  0 to 95%
Wire Type UTP5
Connector Female BNC, RJ45 and Terminal Block
Power 36VDC
Case Aluminum alloy case
Dimension 105mm*70mm*29mm


Type of the required wire:

Unshielded Cat-5 or above twisted pair wire (Please use standard Cat-5 or above twisted pair wire. The wire quality will directly affect the transmitted image effect and transmission distance.)
Characteristic impedance: 100Ω±20Ω
DC loop resistance: 18Ω/100m
Differential capacitance: 62pf/m (Maximum)

Connection method:

Connect the two-color wires of a pair of Cat-5 unshielded twisted pair wire to the ‘+’ terminal of the green socket and connect the single-color wires to the ‘-’ terminal. Connect the BNC interface of the receiver to the monitor or other recording equipments. If there is any joint in the circuit, please adopt welding method or special junction box to ensure perfect contact at the joint. Please be sure to connect the interface marked with ‘icon’ symbol to the ground wire of the lighting-proof system with the copper conductor with sectional area≥1.5 mm2!

The clamping order of the modular plug is shown as follows (TIA/EIA-568B):



Adjusting method:

Adjust “BRIGHTNESS” knob to adjust the image brightness, then adjust “SHARPNESS” dial switch to compensate the image sharpness and color. The compensation size in turn is 1 as minimum and 4 as maximum. Pressing dial switch shows the compensation of this position is turned on. Next or multiple switches can be pressed according to the requirements. The four dial switches can compose 16 compensation values (as shown in the following figure) to meet the requirements of different transmission distances.


Frequently Asked Questions 

Why does my video look like a scrambled Cable TV signal?

This typically indicates reversed polarity.

Can shielded twisted pair be used?

Some customers have successfully used shielded wire up to a few hundred feet. However we does not recommend it. Its high-frequency roll-off will severely degrade the distance performance.

Can Category 6 wire be used?

Yes. Unshielded Twisted Pair wire, Category 5 or better, can be used with UTP video transceiver.

Can I transmit more than one video signal in a multi-pair wire bundle?

Yes. One of the benefits of using UTP video transceivers is interference rejection. UTP video signals can reside in the same wire bundle as multiple video signals, ringing telephones, Ethernet, low voltage power, RS-422, RS-485, etc.


Application Diagram



Product Pictures:






Our Qualifications:




1. Long History and Stable Production
We have more than 10 years' experience in the CCTV security and surveillance industry.
We have exported our products to more than 50 countries and regions, such as the USA, UK, Italy, Spain, Netherland, Portugal, France, New Zealand, Singapore, South Africa, Mexico, Colombia, etc.
Our production capacity is stable. We can arrange the shipment to you in time .

2. Strict Quality Control System
We have strict quality control system. All of our technicians are professional. They are strict on quality control.
Before order, we can send the samples for your testing . We ensure the quality is the same as bulk order.

3.Prompt Response
We will reply to you within 8 hours in working days.

4. Prompt Delivery
We can usually deliver goods between 7 to 15 days.
We have good cooperation with many professional forwarders here. We can send the goods to you on time.

5. Long Warranty Time
Our warranty time is two years.
If there is something wrong with the products we sell, we will support you with technical analysis and solutions. We will also supply replacements if necessary.
We have sold a lot in the USA market for over 10 years and with very few bad feedbacks. The failure rate is less than 1%.

6.FREE Lifetime Technical Support
Our technical support is provided freely throughout pre-sale, on-sale and after-sale.

7.Knowledgeable Sales & Support Staff
We have a strict staff selection criteria and training system.

8.Outstanding Customer Testimonials

9.We NEVER Sell or Share Your Information
Without your permission, we will never sell or share your information to any person or company.

10. We Have Long-Term Development Planning
Our purpose is not simply to make money. We intend to make the brand reputation with 3 to 5 years. So we pay great attention to quality and service.

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