Eachine VTX03 Super Mini 5.8G 72CH 0/25mW/50mw/200mW Switchable FPV Transmitter for RC Drone Precise details: Specification: Brand name: Eachine Item name: VTX03 Super Mini FPV Transmitter Output power: 0/25mW/50mW/200mW switchable (Set output power on 0, to avoid frequency interference) Input voltage: 3.2-5.5V 5V camera supply, 570mA(MAX)---200mW 5V camera supply, 450mA(MAX)---50mW 5V camera supply, 360mA(MAX)---25mW Video system: NTSC/PAL Antenna dimensions: 55mm X 5mm diameter Antenna: IPEX Frequency: 5.8GHz 9 bands 72 channels, with Raceband: 5325-5945 MHZ Size: 21.43*15.20mm(L*W) Weight: 2.97g Operation: -Powering on the VTX, blue LED display 0, indicating the VTX is powered on , but it is in off status without any transmission. -Short-press the button to change channel(CH), digital display will change synchronously. Digital display changes cyclically from 1 to 8. -Long-press the button for 2 seconds until digital display flicker. Then short-press the button to change the frequency band(FR), digital display will change synchronously. Digital display changes cyclically from A, B, E, F, R, U, O, L, H. -Long-press the button for 5 second until digital display flicker. Then short-press the button to change the power, 25mW/50mW/200mW(one hyphen stands for 25mW, two hyphens stand for 50mW, and three hyphens stand for 200mW). -5 seconds after setting, CH, FR and power will flicker alternately. NOTE: The VTX has memory for setting. To change the setting, please repeat steps as above. Package Included: 1 X FPV Transmitter 1 X IPEX antenna