LED indication:The red LED indicates the state of working mode or the item when setting the VTX(flashing 1 time means selecting the channels, flashing 2 times means selecting the bands, flashing 3 times means selecting the levels). The blue LED indicates the state of Pitmode or the value of item when setting the VTXWorking mode indication:After powering up, the red and blue LEDs will signal the following three items of VTX in turn: channel, band and level(the flashing times of the red and blue LEDs indicate the item and the value respectively). After that, the LEDs indicate the working modes.Normal: The red and blue LED are on.Pitmode:The red LED is on and blue LED is off.Setting:Press and hold the C button until the red LED flash 1 time which means the item of channel selecting, then press the C button can select the channels(blue LED flashing times corresponds to the channel 1-8). Press and hold the C button again,the red LED will flash 2 times which means the item of band selecting, then press the C button can select the band(blue LED flashing times corresponds to the band A-F).Press and hold the P button again,the blue LED will flash which means the item of level selecting, then Press and hold the P button can select the (blue LED flashing times corresponds to the level). Press the button twice will toggle the ON/OFF of Pitmode.OSD setting Video transmitter work well with several other commonly used Betaflight/Cleanflight when using OSD setting. Almost all F3 and F4 targets (except for those with integrated VTX) are supported. The VTX only support setting of bands, channels, and Pitmode at the present.Adjustable 4 modes:25mW/200mW/500mW/OFFBetaflight/Cleanflight OSD configuring parameterSupport SBUS configuring parameterMiniature and light weight designFrequency: 5.8G 40CHTransmitting :25mW/200mW/500mW/OFF(Pitmode) supply:DC5-24VSupply current:75mA(25mW)/110mA(200mW)/200mA(500mW)Standard size:26.0x26.0mmMounting holes:20x20mmColour:As shownMaterial:composite materialPackage Contents:1 x FPV TransmitterOnly 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.