The ASCO 214B69 Under Voltage Monitor is a 120 V AC undervoltage monitor and phase/voltage loss relay from ASCO Power Technologies. The model number, often listed as 214B69-120VAC, specifies a 120 VAC input and places the unit in ASCO’s line of voltage/phase monitoring relays. Designed to detect undervoltage conditions, it provides a relay output to trigger protective controls in electrical distribution systems when voltage falls outside prescribed limits.
