FDL 2.4ghz Wireless Audio Video Av Transmitter Receiver with Ir Remoter 250m Compatible with DVD, DVR, CCD camera, IPTV, satellite set-top box, digital TV set-top box and other AV output devices. Superheterodyne 433MHz IR wireless re-transmitter is fully compatible with remote control signals of DVD, DVR, CCD camera, IPTV, satellite set-top box, digital TV set-top box and other AV devices. Images received by means of radio are vivid and stable, the color is flamboyant, and the sound is clear. Supports video transmission of PAL/NTSC system and stereo audio transmission. Fully hardware-designed. There is no need to install software. Plug and play. Simple and convenient. Package included: 1x Transmitter, 1x Receiver, 2x Power Adapters, 2x AV Connection Calbes, 1x IR Remote Signal Extension Wire, 1x Operation manual usb 2.4G frequence band.support 4 groups of channels. You can select these channels to avoid interference from Signals of a wireless router, etc. Wireless transmission is suitable for one-floor. The transmitter and the receiver are used in the same channel in a pair and can be used in the modes of point-to-multipoint or multipoint-to-multipoint.