1. Self-check Function of Power Supply Can Quickly Check Whether The image Transmission is Normal. 2. Frequency Locking Function, Which not Interfere With the Companion When Starting The Machine. 3. 0-2.5W Power is adjustable, Allowing you to Switch Seamlessly in Different Environments. Output Power:0-25-400-800-1500-2500mW. Input Voltage:6-36V Parameter adjustment Mode:Double Buttons/OSD Operating Current:less Than or equal to 450mA@12V, 800mW. Less Than or equal to 850mA@12V, 2500mW Output Frequency:40CH(A-B-E-F-R) Antenna Interface:MMCX Installation Hole:30.5x30.5mm. Video Format:NTSC/PAL automatic Detection Weight:12.5g (excluding antenna and Power Cord) Notes: Double-click the KEY.PW key at any time (interval-0.5s). The power setting number is directly supported to level 5 (maximum power), and the LED PW light blinks 5 times. Every time you KEY RF, the frequency band switches from A-B-E F, and the LED RF blinks . The LED RF blinks accordingly. The system automatically update the parameter settings of band and frequency point and save them. If you the LED RF key for more than 10 seconds in any state, the system restore the parameters to the factory settings and save them. In order to prevent the high power from burning the amplifier module, the power parameter of this crystal is set to the lowest value in the factory.Please plug in the antenna before power on, otherwise the module be . Colour:As Shown Material:ABS Size:35.5x36.5x10mm Package Contents: 1 x 5.8G 2.5W VTX 1 cable 1 x MMCX to SMA adapter 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.