• Relays

This device is converts a small electrical input into a high-current output. Relays are a highly versatile component.

• Speakers, Buzzers &Transducers

Buzzers configured as indicators require only a dc voltage to operate but are limited to a single audio frequency of operation, whereas transducers require external circuitry, but provide a wider range of audio frequencies.

• Switches

A switch activates or deactivates an electrical signal by opening or closing a set of contacts. These important components direct signals to specific functions and can be automated.