A ? relay is a relay that not only maintains its contacts in the last position without a continuously energized coil, but also with a mechanical mechanism or remnant magnetism until it resets electrically.

Respuesta :

Answer:

A latching relay

Explanation:

A latching relay is a subtype of electromechanical or electromagnet switch. It is a type of relay that maintains its position even after the power is removed. The reason why its used is because they allow a control of circuit by simply providing a single pulse to the relay control circuit.