Rochester Instrument Systems ET-1234-H Current Alarm

ET-1234-H (alternate listing ET1234H) is a Rochester Instrument Systems failsafe current alarm designed to monitor a 4-20 mA process current loop. It is powered from a 24 V DC supply and delivers alarm signaling in response to current-loop conditions, enabling rapid notification of out-of-range or fault conditions in instrumentation and control systems. As part of the AMETEK Power Instruments RIS family, the ET-1234-H sits alongside other RIS devices in catalog and marketplace listings, reflecting standard interoperability within RIS installations. The model name ET-1234-H appears in official and retailer listings, with ET1234H frequently used as an alternate part number in inventories. Typical applications include process monitoring and panel-based alarm signaling where maintaining correct 4-20 mA signaling is essential for timely maintenance and safe operation. The ET-1234-H provides alarm signaling within compatible RIS/AMETEK loop-powered systems operating from 24 V, ensuring consistent behavior across deployments.