Schneider Electric RMNF22 Near-Field Communication (NFC) Timing and Control Relay is a multifunction, 208VAC to 480VAC (line to line), 120VAC to 277VAC (line to neutral) relay. The 8A NFC 3-phase monitoring relay allows for NFC monitoring via a remote/handheld device using digital signals instead of analog. This NFC control relay is designed to monitor voltage and frequency events in industrial automation systems by closing or opening contacts. Schneider Electric RMNF22 NFC Timing and Control Relay works with the Zelio app for greater simplicity, efficiency, and security.