Used For The Modular Panel System and High Joule Modular Panel System. Rated 125V, 60HZ. 6FT. Line Cord Plug - Black Leviton’s Surge Protection Devices can be used individually or as part of a coordinated application strategy, to protect sensitive electronic equipment, in industrial, commercial and residential locations, from the stress and degradation inflicted by voltage transients. Leviton Surge Protection Devices are listed to UL 1449 Standards. Transients are diverted away from sensitive micro circuitry, providing protection against catastrophic failure, costly downtime and data disruptions. The 52000-RS; For use with any panel-mounted SPD that has dry contacts Monitors up to 6 (series alarm daisy-chained) panel-mounted SPDs Single key-hole surface mounting using just 2 screws 75dB acoustic beep tone draws attention to a potential failure Terminal block provided for simple connection to input port via #20 to #22 two-conductor twisted pair, with a wire run up to 5,000 ft. in length.