1. Use 2.4GHz ISM frequency band, support 8 groups of 2.4GHz channel selection. The unobstructed transmission distance is up to 300 meters. Support transmission through walls. The digital screen displays the channels, and the channel selection is convenient and intuitive;2. Exclusive wireless anti-interference patented technology, effectively blocking wireless signal interference such as walkie-talkies and wireless routers. Support PAL/NTSC audio and video transmission. The transmitter supports 1 RCA audio and video signal input, and the receiver supports 1 RCA audio and video signal output;3. In the same channel, the transmitter and receiver can be used one to one or one transmitter to multiple receivers at the same time. Support 433MHz superheterodyne infrared remote control signal wireless return, compatible with 38KHz infrared carrier remote control signal4. The transmitter comes with infrared signal transmission or uses an infrared signal extension cable. High quality shell, super heat dissipation effect, effectively guarantee the long working hours and life of the equipment;5. Full hardware design, no need to install software, no settings, simple installation, plug and play.Method: wirelessTransmission frequency: 2.4GHzSensitivity: -90dBmTransmitting power: 50mWChannel switching: 8 groupsTransmission distance: less than equal 300 metersInput and output ports: RCA1 channel video input/output: 1Vp-p (PAL/NTSC)1 channel audio input/output: 1Vp-p (Stereo)Superheterodyne receiving: transmitting end: -110dBm; receiving end: 433.92MHzInfrared carrier: 38KHzInfrared emission distance: sending end: greater than equal 5m; receiving end: greater than equal 10mPower input: 5V 1000mAPlug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so oncolour:SilverMaterial:Aluminum alloysize:100 x 100 x 25mmPackage Contents:1 x transmitter1 x receiver2 x power adapters2 x AV cables2 x bracket1 pack x screws1 x extension cord1 x Chinese and English manualOnly the above package content, other products are not included.Note: Light shooting 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.