Boscam TS353 5.8g 8CH 400mW AV Wireless FPV Transmitter for RC Quadcopter Video TX 3.5KM Brand Name:Boscam Power Input: 7-15V (3S Lipo suggested, does NOT support 4S Lipo); Transmitting Current: 220mA; Dimension: 55 x 26 x 17mm (excluding antenna) Working Frequency : CH1: 5705 ;CH2: 5685; CH3: 5665; CH4: 5645 ;CH5: 5885, CH6: 5905 ,CH7: 5925 ,CH8: 5945 Package Included: 1 x transmitting TS353 ,1 x TX antenna, 1 x wires Note:Please put on the antenna first before power up,or it may cause the TX damaged