Feature: 1. [Support One To Multiple Receivers] Wireless RCA transmitter is a basic model without IR remote control function, support one transmitter to multiple receivers, but you need to purchase more receivers additionally. It is used to transmit sound and video signals from the source device to the display. 2. [Usage Range] Wireless AV transmitter can up to 300m in clear line of sight, break through distance and space limitations to cover a variety of environments. The distance is up to 10‑50m/33ft‑165ft when passing through wooden and glass wall. But not through or only up to 10m/32.8ft or less when passing through some concrete wall. 3. [5.8GHz Transmission] Wireless RCA transmitter receiver supports 5.8GHz ISM band. It can be used in point to multipoint mode. The built in 5.8G wifi makes the transmitter and receiver connected and can work without local wifi network. 5.8GHZ high frequency transmission, clear and stable picture, no noise, easier to pass obstacles. 4. [8 Channels] Wireless TV transmitter can support 8 channels to work, must make sure the transmitter and receiver are on the same channel to work properly. The best working channel is different in different environment, so you can switch to different channels and find the best working channel according to the environment. 5. [Plug And Play] AV transmitter receiver requires no more settings and drivers. Support using with any AV output device, VCD, DVD, IPTV, DVR, satellite receiver, STB digital CCTV camera, etc. No long cable, wireless transmission to form a local shared signal to watch TV from living room to bedroom. Specification: Item Type: AV Transmitter Receiver Material: Aluminum Alloy Transmission Frequency: 5.8GHz Sensitivity: -90dBm Transmit Power: 50mW Channel Switching: 8 Groups Transmission Distance: Approx. 300m / 984ft Operating Temperature: 32-104℉, 0-40℃ Storage Temperature: -4-140℉, 20-60℃ Humidity: 20-90RH. Package List: 1 x AV Transmitter 1 x AV Receiver2 x Power Adapter2 x AV Connection Cable1 x Instruction Manual1 x Screw Package2 x Blocking Piece