Marsh Bellofram offers an “S” model in the UPA-130S series to provide LED lighting and alert capabilities for monitoring applications that require improved safety compliance without standard flashing LEDs. The series reduces the risk of electric arc flash by pre-verifying the electrical isolation outside a control panel before re-verifying with a meter. UPA-130S operates over a standard range of 40 to 750 V ac (30 to 1000 V dc) line-to-line or ground-to-ground, is phase insensitive, and offers surge immunity protection. When hardwired to the load side of a circuit breaker or main disconnects, the series detects stored hazardous voltage in any phase. The compact UPA-130S series offers a potted construction with 6-ft (1.8-m) leads and is designed to fit a 30-mm (1.2-in) knockout. Redundant circuitry and display panel LEDs extend use.