Compatible with digital TV set-top boxes, VCD/DVD players, digital cameras and other suitable devices. Effectively solve the problems of sharing audio or video with your families: This item build a wireless family's audio-visual system of entertainment by working with the HDTV or HD projection machine and let users greatly enjoy the audio-visual system of home theatre. Transmission distance: 200-250m (Open space,and the transmission distance greatly depends on the surrounding environment). Easy to use, convenient and quick. With compact portable design. This item includes a wireless display 12 channels receiver and a digital 8 channels transmitter, which can be regarded as a wireless audio & video transmission system. It can wirelessly and simultaneously transmit the analog audio and video signal source of the camera or VCD/DVD players to the Displayer or monitor. It bring much convenience and funny to its users. Note: It cannot solely transmit the audio signal. Transmitter Parameter: Weight:80g Dimension:73x41x14mm Working Voltage:DC12V Working Current:400mA Working Frequency:1.2G Working Channels:8CH Frequency:1.2Ghz - HC1:1080 HC2:1120 HC3:1160 HC4:1200 HC5:1240 HC6:1280 HC7:1320 HC8:1360(MHz) Working Power:1500mW Transmitting Range:1000m~2000m (In Open Fields) Transmitter accessories:transmitter,antenna,Tx cable,1.25A adapter. Receiver Parameter: Weight:115g Dimension:115x80x21mm Working Voltage:DC12V Working Current:260mA Working Frequency:0.9G-1.3G Working Channels:12CH Receiving frequency:1.2GHz - HC1:910 HC2:980 HC3:1010 HC4:1040 HC5:1080 HC6:1120 HC7:1160 HC8:1200 HC9:1240 HC10:1280 HC11:1320 HC12:1360(MHz) Colour:As Shown Material:Metal Package Contents: 1 x transmitter 1 x receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.