SPDT Relay-5V/7A-PCB Mount A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as making contacts, break contacts or combinations thereof. Relays are used where it is necessary to control a circuit by an independent low-power signal, or where several circuits must be controlled by one signal. Relays were first used in long-distance telegraph circuits as signal repeaters: Relays were used extensively in telephone exchanges and early computers to perform logical operations. Technical Specifications: Relay Type: SPDT Coil Voltage Rating: 5V Current: 7A Contact capacity: 7A@250VAC 10A@120VAC 10A@24VDC Pin counts: 5 Colour: Blue Mounting Type: Through-hole Package Includes: 1 Piece- Relay SPDT 5Pin 5V/7A PCB Mount