1. Uses The 5.8Ghz Ism Frequency Band And Supports 8 Sets Of 5.8Ghz Channel Selection; The Unobstructed Transmission Distance Is Up To 300 Meters. Support Transmission Through Walls; 2. Digital Screen Displays Channels, Making Channel Selection Convenient And Intuitive; Patented Wireless Anti-Interference Technology Effectively Blocks Interference From Wireless Signals Such As Walkie-Talkies And Wireless Routers; 3. 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; 4. When Using The Same Channel, The Transmitter And Receiver Can Be Used One-To-One Or One Transmitter To Multiple Receivers At The Same Time; The Aluminum Alloy Shell Has Strong Heat Dissipation Effect, Effectively Ensuring The Working Time And Life Of The Equipment; 5. Full Hardware Design, No Need To Install Software Or Any Settings, Simple Installation, Plug And Play. :Wireless Frequency band:5.8GHz Format:PAL/NTSC Interface:RCA (AV) Transmission distance:less than equal 300 Meters 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 * Transmitter 1 * Receiver 2 * Power Adapter 2 * Audio And Video Cable 1 * English Manual 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.