Starcn 2.4GHz DC12V Wireless 3W Audio Video AV Transmitter Sender Receiver CCTV 4 channels provided as options to ensure clear reception of video and audio. Stereo audio function: Perfect for using with DVD, camcorder, satellite system, or stero. Wide band characteristics of fine audio and video receive quality Transmitter can connect any AV devices such as CCTV camera, VCR Recorder, DVD player, Video camera ...e.t.c. Low power consumption, high sensibility. Input and output: RCA Jack for Video and Audio. Effective range: Up to 1000 meter line of sight, 80 meter with walls in between.