Infrared switch

Infrared switch

This is a single-channel (on/off) universal switch that can be used with any infrared remote control that uses an 850-950nm wavelength.

Any button on any remote control can be used to operate this universal switch. The button must be pressed for two seconds (determined by R3 and C2) for the relay to operate. Once operated, the circuit will remain in this state (locked) until reset. To reset, any button is pressed and held for the delay time. For example, if you are watching TV and the TV is tuned to channel 3, you can press and hold the channel 3 button on your TV remote for two seconds. This will not affect TV viewing, and the relay will be activated. You can connect anything to the relay, such as a light bulb, but ensure that the relay contacts can handle the rated voltage and current.