1. Use The 2.4ghz Ism Frequency Band And Support 8 Sets Of 2.4ghz Channel Selection; The Transmitter Supports 1 Audio And Video Signal Input, And The Receiver Supports 1 Audio And Video Signal Output; 2. Unobstructed Transmission Distance Up To 300 Meters. Supports Transmission Through Walls; When On The Same Channel, The Transmitter And Receiver Can Be Used One-To-One Or One Transmitter To Multiple Receivers At The Same Time; 3. The Digital Screen Displays Channels, And Channel Selection Is Convenient And Intuitive; It Supports Wireless Return Of 433mhz Superheterodyne Infrared Remote Control Signals And Is Compatible With 38khz Infrared Carrier Remote Control Signals; 4. Patented Wireless Anti-Interference Technology, Effectively Blocking Interference From Wireless Signals Such As Walkie-Talkies And Wireless Routers; The Transmitter Comes With Infrared Signal Transmission Or Uses An Infrared Signal Extension Cord; The Aluminum Alloy Shell Has A Strong Heat Dissipation Effect, Effectively Ensuring The Working Hours And Life Of The Equipment ; 5. Supports Pal/Ntsc Audio And Video Transmission; Full Hardware Design, No Need To Install Software Or Any Settings, Simple Installation, Plug And Play. Description: 1.Transmission frequency: 2.4GHz 2. Sensitivity: -90dBm 3. Transmit power: 50mW 4.Channel switching: 8 groups 5.Transmission distance: 300 meters 6.Input and output port: 7.1 channel video input/output: 1Vp-p (PAL/NTSC) 8.1 channel audio input/output: 1Vp-p (Stereo) 9. Superheterodyne reception: Transmitter: -110dBm; Receiver: 433.92MHz 10. Infrared carrier: 38KHz 11. Infrared emission distance: sending end: 5m; receiving end: 10m 12. Shell: aluminum alloy 13.Power input: 5V 1000mA 14. Size: about 100 x 1000 x 25mm 15. Working temperature: 32~104/0~40 16.Storage temperature: -4~140/20~60 17.Humidity: 20~90RH Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Plug Type :AU Plug,it applies to Australia and so on. Voltage: AC100-240V Colour:As Shown Material:Aluminum Alloy Package Contents: 1 x Transmitter 1 x Receiver 2 Adapter 2 x Audio And Video Cable 2 x Movable Bracket 1 x English Manual 1 x Infrared Extension Cord 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.