... channels Function and Features:1. Use 2.4GHz ISM frequency band.2. 150m transmission range.3. Support 4 ... DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB and other AV output devices.5. Superheterodyne ... DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB and other AV devices.6. Images received ... 10cm (L) ×8.5cm (W) ×3.0cm (H). 2.4G Wireless AV Transmitter and Receiver , Model:PAT-220