1.5.8G 8ch transmitter 2.With channel button to change channels easily 3.Channel memory function for power-off 5.8G 400mW AV wireless receiver and transmitter kit RC305+TX5804Feature of 5.8G 400mW AV wireless receiver and transmitter kit:5.8G 8ch transmitterWith channel button to change channels easilyChannel memory function for power-offVery light and ultra mini sizeThe mini but powerful 5.8G 400mw transmitter would make your fly to 4-5 km away with only the stock antenna, advanced build-in regulator offers this transmitter very wide power input range.5.8G NEW 400mw transmitter is just light, compact and powerful, a very good choice for 5.8G middle range FPV.This transmitter is compatible with all our 5.8G VRX like RC305, RC805 , AIO goggles and 5.8G DVR DV01.Specificaiton: Transmitter frequency: 5645-5945MHz; 8CHTransmitting Power: 400mW/26dBmTransmitting distance: > 4000m(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: 300mASize: 55*26*17mm 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 RC305 Frequency 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