A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. 

Radar Inc offers an extensive selection of relays such as solid state relays, reed relays, protective relays, latching relays, and automotive relays as well as current and voltage monitoring relays and liquid level monitoring relays. These relays are available in a variety of options including circuit board or PCB mount, din rail mount, or pluggable. Radar Inc is an authorized distributor for the following manufacturers.