It is often required to switch electrical appliances from a distance without being a direct line of sight between the transmitter and receiver. As you may well know, an RF based wireless remote ...
Back in the day when you had to wind up your TV to watch it, licensed broadcasters were required to log transmitter meter readings every half hour, and only an FCC-licensed engineer could do it. Today ...
Your 3-button garage remote is built to do far more than raise and lower a single garage door. With a little setup, those extra keys can control multiple doors, gates, lights and even security ...