Control protocol Tramp, supports OSD parameter adjustment Highly efficient DC/DC power, supports 7-36V Power number: PIT 25mW/400mW/800mW/2500mW, short press the power adjustment button to switching power Channel selection (48CH): frequency band/frequency point adjustment button: long press 3 seconds to switching frequency band, short press to switching frequency point high-strength aluminum alloy CNC shell with built-in micro-turbine fan for active heat dissipation, enhancing power and stable transmission. The transmitter comes with a temperature control protection function to prevent prolonged ground parameter adjustment from causing the transmitter temperature to be too high. Support external audio input Support 5V voltage output Item name: FPV Image Transmission Type: transmitter ( end) Input voltage: 7-36V DC (2-6S) Output voltage: 5V/0.5A Transmitting frequency: 48CH Video format: PAL/NTSC Transmitting power: 34dBm1dBm (MAX) Antenna interface: MMCX Used for FPV drone RC model airplane Colour:Black Material:Aluminum alloy CNC + plastic Size:38.7x26x11mm Package Contents: 1set x image transmission Transmitter(With cable random color, no specified color accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.