700mW AV Transmitter and Receiver.Should install wireless audio video transmitter receiver at the place where children cannot to Specifications:Transmitter:Voltage: ... : 28.5≥dBFrequency:1.2G/15CH, 1.021G, 1.051G, 1.060G, 1.08G, 1.100G, 1.120G, 1.140G, 1.160G, 1.18.G, 1.200G, 1.220G, 1.240GGuidance of Technology ...