Working power: 4 levels can be set, up to 1.6W continuously Working channel: 48CH Multiple ways to set parameters: SmartAudio, button Tower installation hole: 30x30mm With 5V, 300mA output Input voltage range: DC 7-32V Strong power supply impact resistance 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: 1x Audio Video Transmitter 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.