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LVS UL924 listed shunt relays are the simplest and lowest cost method for emergency lighting control. Line voltage rated coils (120V or 277V) control 20A rated dry contacts which can be used for a wide range of applications, including relay panel interface, multi-phase sensing, and direct control of emergency lighting.

LVS shunt relays have been used in the market for over 20 years, and the RRU line has been recently updated with our "UM" series, which offers additional features like dual voltage input, integral test switch and indicator LED. The RRU-X-UM is the most advanced shunt relay on the market, and includes an additional relay for 0-10V bypass, ideal for wireless control systems.