2.4G Wireless AV Sender 150m transmission range 4 Selectable channels RCA port, ... select these channels to avoid interference from signals of a wireless router, etc.4. Compatible with DVD, DVR, CCD camera, IPTV ... : 10cm (L) ×8.5cm (W) ×3.0cm (H). 2.4GHz wireless audio transmitter, Model:PAT-330,150M transmission distance,CE tested,Best ...