... &NTSC auto-switchingPower supply:24V±10%Built-in 2.4G wireless function, can receive audio/vedio4 trigger singal, 2.4G 4 ... area:100MBuilt-in speakerOSD menu, remote controlTouch button sreen1-4 wireless waterproof camera(optional)Dimension:191*140.5*32mmBUS/Truck camera with ... : 05.luxImage angle:120°System: PAL&NTSC auto-switching2.4G wireless transmitter:100M in open areaPower supply:12V-24V±10%Water ...