The revised handbook builds on the basics of relay technologies detailed in previous editions, while adding content covering new technologies such as MEMS relays and semiconductor basics with concomitant solid-state relays and switches.  It also includes an expanded glossary of the latest relay and switch terms from national and international sources.

Produced by the Relay and Switch Industry Association (RSIA), formerly the National Association of Relay Manufacturers (NARM). RSIA is an affiliate of ECA.