The past 20 years have seen a proliferation of relays on cars. From a DIY point of view this is good news. Not only is a good-quality relay a very reliable component, but its working is also easy to ...

Over the years, control relays of various types have been used by the hundreds — even thousands — to control nearly every function in commercial and industrial processes. Today, many of those ...

A relay is just a switch. The purpose of any switch is to turn something on and off. A relay turns HVAC equipment on or off. It’s that easy. A thermostat is also just a switch that turns HVAC ...