Wireless analog audio and video transmission 500 meters 500mW transmitter
A transmitter technical parameters: 
 Voltage 12V 
Current 500MA 
Channel 15
 Frequency 1.2G 
Power: 500MW 
Temperature -20  --- 60  
Volume of :64mm (L) * 45mm (W) * 19mm (H)
Color:slever
Second, the receiver technology parameters:
Body volume: 115 * 81 * 21mm 
Weight: 120g 
Temperature: -10  - 60

 Voltage :9-12V 
Current: 250mA 
Frequency: 1.2G 
Sensitivity:-85dBM 
Color: Silver
Fittings include: transmitting and receiving each one; 
Transmitter and receiver each one dedicated switching power supply; 
Transmitter and receiver of each post a small omni-directional antenna; 
Transmitter and receiver dedicated connection line;
Third, the transmission distance Description:
(1) open environment: with 1DB small antenna on 250 meters; 9DB antenna on 500 meters; 15DB antenna on 700 meters;
(2) walls, buildings, metal objects such as blocks: 1DB small antenna on 80 meters; 9DB antenna on 100 meters; 15DB antenna on 400 meters;

   The scope of application: a low-power video transmission, with the mobility of the elderly in the family and the care of infants and young children sleep; journalists, judicial officers handling the case; model aircraft for aerial photography and other types of close range wireless occasions surveillance / monitoring. 
Buy and warnings:
Please also purchase a good quality camera, and then with our wireless video transmitters connected; receiver and TV AV (or supervisor or purchase the video capture card via the computer) connection, you can watch real video and audio front-end camera shine . Prohibit the use of the product to engage in illegal activities!! 

 Note: The quotation shall be in accordance with the wholesale price excluding freight and various types of taxes! For the buyer an invoice, your payment, the total amount in the payment of taxes plus 3%. 
End your paragraph after the Meeting, please send remittances back to a single success, and order lists, and shipping address name and phone number, and Jin-pass to open the invoice information, along with fax to86 0755 89697606      

Goods for repair issues: customer from the date of receipt of goods within a week of any quality problems the company OZ; from the freight paid by the supplier. However, if the user (received) the use of any problems after 10 days, Back to vendors and back to the courier to send the buyer, paid by the buyer within one year. repair, maintenance of life.
Replacement conditions: the appearance of intact, product seals intact, parts complete, can re-sale.
Maintenance matters: appearance of the product damage, high-voltage burn, moisture, seals broken, flooding is not a warranty ...
(Note: change, repair cargo to and from post, transportation, purchase payment / make money from the buyer to pay bank charges.)