... Selectable channels Function and Features:1. Use 2.4GHz ISM frequency band.2. 250m transmission range.3. Support 4 groups ... router, etc.4. Compatible with DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB and other ... with remote control signals of DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB and other ... (L) ×8.5cm (W) ×3.0cm (H). 2.4GHz AV Sender & IR Remote Extender, Model:PAT-240