Features: brand new and high quality Easy to use, just plug and plays, no driver/software installation required. Strong anti-interference ability, strong co-existence, can go through the wall. Long distance, it can reach up to 200m/656.2ft wireless free transmissions. Wireless application audio equipment can be used for home entertainment and commercial activities. Wireless audio transmitter and receiver support 5.8GHz. The received sound are clear, stable, noise-free, audio synchronization. Specifications: Material:ABS Plug:US/EU/UK/AU Input: AC100-240V50/60Hz Output: 5V=1000mA Electricity consumption: TX:500mA/RX:200mA Operating temperature: 0-50 c Working humidity: 85% Operating frequency: 5545-5945MHZ Bandwidth: 16.5MHz Number of channels: 24CH Receiving sensitivity: -86dBm Audio signal-to-noise ratio: 50dBMin Output resolution: 720x480P Input/output interface: RCA Length:Approx.10cm/3.93inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Digital Wireless Transmitter