Operating instructions: Frequency switching: Click to switch. (Blue light CH1/CH2/CH3 indicates current frequency). Frequency group switching: Long for 2 seconds to enter switching mode, click to switch. (Red light blinking times indicate the current frequency group) , Frequency group A/B/E/F/R/L. Power switching: and hold for 6 seconds to enter switching mode, click to switch. (The number of times the green light blinks indicates the current power), Power 25/400/800/1.5W/3W, (Setting is completed after 8 seconds of resting automatically save and exit) Channel meter indication description: 1. Power indicator/green light 2. CH1 frequency indicator/blue light 3. CH2 frequency indicator/blue light 4. CH3 frequency indicator/blue light 5. Frequency Group Indicator/Red 5VOUT/GND/VIDEO/RX(SA)/GND/VIN(6-28V) Note:Please install the antenna to use Colour:As Shown Material:Metal Package Contents: 1 x 5.8G 3W VTX 1 x cable 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.