Features of  5.8G 200mW wireless AV transmitter:
5.8G 8ch transmitter
With channel DIN-switch to change channels
  Specificaitons of 5.8G 200mW AV wireless transmitter:
Transmitter frequency:5645-5945MHz;8CH
Transmitting Power:200mW/23dBm
Transmitting distance:>2000m(open area)
Frequency control:built-in frequency and phase lock loop  
AV input:analog AV signal input 
ANT connector:SMA(inside the needle)
power supply:12 volts
Current supply:200mA
Size:51*31*13mm
  Remark:
The transmitter's power input is 12v. It's suggested to use 3S lipo 11.1V battery.

Note:antennas must be attched before powering on.

Content of the package:
1 x 400mW 5.8Ghz VTX
1 x 5.8GHz 2 dBi omidirectional antenna
1 x Connector and cable set