The EMR6-F500-G-1 with Module voltage monitoring relay is a phase sequence, phase failure module manufactured by Eaton. It is a relay designed to monitor three incoming phases and two internal phases. It can be used to monitor current and voltage levels, phase status, and phase sequence. The relay can be used to detect overvoltage, undervoltage, and phase reversal. When a fault is detected, it will open or close the contacts to provide an alarm or shut down a system. The relay can also be programmed to switch off the lighting in case of a power fault. It has an operating voltage of 24V AC, 100/250V AC, or 24/110V DC with an operating temperature range of -25°C to + 60°C.