Wide Compatibility :Both the infrared emitter and the receiver's frequency is 20-60KHz ... cables in line-of-sight of the source IR sensor no further than 2 inches for best signal.

The receiver also has sockets for several IR emitters (IR flashers) that are wired to, and pasted directly over, the IR sensors for precise aiming. High-end, third-party remote controls use radio ...

Plug in the emitter and turn on the receiver. Align the emitter, receiver, and metal plate so that the microwaves reflect off the plate and into the receiver. Turn off the receiver. Turn on the ...