This little circuit is invaluable for quick go/no-go testing of just about any remote control transmitting infra-red (IR) light. The tester is battery-powered, built from just a handful of commonly ...

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.

Lightweight and portable, the Model 235 Remote Network Cable Tester is a battery-powered unit that can test all of the wiring faults of 10Base-2, 10Base-TX, RJ45, EIA/TIA 356A and 568A, and Token Ring ...