1.Compact design, extreme size and weight. 2. split design. 3.Wide voltage 2.5-5.5V input (3-5V recommended). 4.Standby mode to save power when not in use. 5.5-band 40 channels with for Raceband. Sensor:1/4 'CMOS Lens:M7 Lens 700TVL lens Angle:Horizontal 120° Format:NTSC / PAL(Switchable) Power:220mA-400mA 3.0v-5.0v Output Impedance:50ohm Output Signal Strength:13±1dbm Wireless Channel:40 ch Antenna:5.8g 3dBi Power supply: DC 5V ±0.5V Output power:Max.25mW Button Function: Short (about 1 second or less): change channel 1-8; Long (more than 1.5 seconds): to change bands A-B-E-F-R; Long (more than 3 seconds): switching between normal mode/standby mode; LED indicators: The blue LED is always lit in normal mode and flashes in standby mode. Red LEDs 1-8 are used to indicate bands and channels. Display band for 1 second → display channel for 1 second → hide all for 1 second, cycle operation. Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:Black Material:Plastic+PC Package Contents: 1 x LST-S4 FPV camera 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.