Note: The high-power video transmission must be connected to the antenna before powering on. Otherwise, the power amplifier circuit will be burned and the image transmission will be damaged! Input voltage:7-36V Working frequency:1.2G-1.3G Available channels:9-CH Maximum output power:1600mW Maximum size:37mm x 30mm x 8mm Mounting hole:25.5X25.5mm Weight:7.3g Number of channels: Frequency:1080/1120/1160/1200/1240/1258/1280/1320/1360(MHz) Output power:10 /200 /1600MW S(Fo3MHz): 70dBc Antenna Port:50 Ohms Input format:NTSC or PAL Operating Temperature:-10~+60 Profile dimension:28mm(L) x 21mm(W) x 3.1mm(H) Function Description: 1. tramp "PIT/10 /200 /1600MW" 2. Press and hold the channel selection button for 1 second to switch CH 1-9 cycle. 3. Press and hold the power selection button for 1 second to switch the power to 10/200/1600 cycles. 4. Press and hold the power selection button for more than 2 seconds to switch between entering PITMODE and exiting PITMODE When using this product, please comply with local regulations and install the antenna before use Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Black Material:PCB Package Contents: 1 x Transmitter Module Kit 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.