Here is a simple tester for checking the basic operations of an infrared remote control unit. It is low-cost and easy to construct. The tester is built around infrared receiver module TSOP1738.

Nearly always when a remote control doesn’t work, the underlying problem is elementary: the unit does not emit light. The cause may be dry solder joints, defective LEDs etc., but also a flat battery ...

The CT20 Continuity Tester Pro features single-user remote or local continuity testing and wire/cable identification capabilities, eliminating the need for someone to be at both ends of the wires ...