... and connect the antennas, and then apply the power--Switch on the power button--Set RX1,RX2,RX3,RX4 ... the strongest signal is confirmed. It will automatically switch to the receiver with the strongest signal Package content ... manualsAV Out cablesFront panel with Channel Frequency selector, power switch, AV connectorFront panel with Channel Frequency selector, power switch, AV connectordetailed view