1.With channel DIN-switch to change channels 2.with fan 3.compatible with all our 5.8G VRX like RC305, RC805 , AIO goggles 5.8G 500mW AV Wireless Receiver and Transmitter Kit RC305+TS352 Features of 5.8G 500mW AV Wireless Receiver and Transmitter Kit:With channel DIN-switch to change channels5.8G 500mw transmitter is powerful transmitter with fan,it is compatible with all our 5.8G VRX like RC305, RC805 , AIO goggles and 5.8G DVR DV01.Specificaiton of 5.8G 500mW AV Wireless Receiver and Transmitter Kit:Transmitter:Transmitter frequency:5645-5945MHz;8CHTransmitting Power:500mW/27dBmTransmitting distance:>5000m(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:6.5-15 voltsCurrent supply:400mASize:68*26*28mmWeight:65g(no cable and antenna)Remark:The transmitter's power input is ranging from 7-12V,however the voltage outptu from the TX for the camera us 0.5V,lower than the input power.It's suggested to use 3S lipo 11.1V battery.Note:antennas must be attched before powering on. Receiver:Receiving frequency:5665-5945MHz;8CHReceiving sensitivity:-90dBm Frequency control:built-in frequency and phase lock loopDouble lines AV output:analog AV signal outputAntenna connector:SMA(Inside the needle) Power supply voltage: 8-12VSupply current: 100mA   Dimension: 61*52*13mm(aluminium alloy extrusion profiles)Remark:The receiver's power input is ranging from 8-12V,dual AV output is supportedNote:the av cable uses 3.5mm plug on the receiver RC305Frequency of each channel:CH1: 5705 CH2:5685CH3:5665  CH4:5645CH5:5885  CH6:5905CH7:5925  CH8:5945 Note:the av cable uses 3.5mm plug on the receiver RC305