Signal relays have smaller size, compared with other types of relay. And they are originally designed for use in telecommunication applications, but they are now used in many different applications where the relay is switching a signal rather than a heavy load such as a large motor or heater.And some of them has the smallest size of relay.
Typical applications of Signal relays include below ones, and we will talk about them and more later.
1. PBX (private branch exchange)
2. Electronic switching systems
3. Terminal equipment
5. Medical equipment