The RPM/RLM Series is a modular relay pak line which offers configuration flexibility in reference to number of relays, relay type, and built-in expansion. There are consists of two basic chassis models (RPM2, and -4) and two types of plug-in relays (RLM-24, RLM-24-5). Modular units are ideal for application where a 24VDC, DPDT relay is required, including institutional, industrial, corporate, and manufacturing facilities, where zone paging, back-ground music, intercom, and telephone systems are used. RLM-24 and RLM-24-5 are 24VDC plug-in relays equipped with three, and five amp contacts, respectively. The RLM-24 is commonly used for switching low level circuits (1mA minimum to 3Amp maximum) with virtually no long term oxidation problems. RLM-24-5 is used for switching higher currents (500mA minimum to 5Amp maximum).