... 2. Support 12V or 24V automobile battery; 3. 4 channel. 4. Digital 5.6 Inch Wireless camera system with ... available: AUTO /PAL/ NTSC.4 channel receiver,1 channel for video output and 1 channel for audio output.Operates from 10~ ... : -87dBDemodulation Mode: FMReceiving Frequency Range: 2400~2483MHZDistance: 100m (barrier-free)Frequency Group Supported: 2414,2432, 2468,2450Audio output: 1W.Loudspeaker ...