Input analog audio and video signals such as projectors, cameras, set-top boxes, , dance blankets, etc., transmit ordinary analog TV signals, and receive them wirelessly with ordinary household televisions or TV mobile phones. This receiver with different sensitivity is suitable for penetrating about 1-3 rooms. It is not recommended to use an external high gain antenna for long-distance transmission to avoid interference. Reducing RF signal output can be used as a TV modulator. The products are suitable for set-top boxes, cameras, TV audio wireless audio transmission, TV mobile phone factory testing, projectors, game consoles, dance blankets, and other equipment that need audio and video to analog TV transmission. UHF16 channels are adjustable, any one of the 16 channels can be for use. Operating voltage: dc12V regulated power supply than 1, 5A(not include). size: 105mm x 76mm x 35mm Material: Aluminum alloy colour: Black Package Contents: 1 x UHF TV Signal Transmitter 1 x Antenna 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.