Frequency: 1.2G frequency band; A, 1 frequency group, 8 channels Antenna interface: MMCX RF impedance: 50 RF output power: PIT/25mW/400mW/600mW/1W/2W Input power supply: 7-28V DC Current consumption: 600mA@12VDC@2W Operation mode: Key operation, OSD control Input video impedance: 75 Input video amplitude: CVBS 0.8-1.2VP-P Video format: NTSC/PAL Key operation instructions: Power button: green light indication, short press to switch power, flashing times to indicate current power; Long press for 2 seconds to switch to PIT mode, and the constant light indicates PIT mode. Frequency button: Red light indicates frequency group, blue light indicates frequency; Short press to switch frequency, CH1-CH8 cycle switching. Due to different product batches, the appearance , which does not affect the use Colour:Black Material:Aluminum alloy Package Contents: 1 x 1.2G 2W Transmitter Module 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.