Moore Industries IST-4-20MA-117AC-RF Isolated Signal Transmitter Module

The Moore Industries IST-4-20MA-117AC-RF Isolated Signal Transmitter Module is an isolated transmitter that handles a 4-20 mA process signal, providing galvanic isolation between the measurement loop and the connected control or monitoring equipment, a configuration commonly used to protect instrumentation from ground loops and electrical noise in industrial environments. The model designation IST-4-20MA-117AC-RF identifies the device’s core function—4-20 mA signaling—and its 117 VAC power configuration, with RF included as part of the product name, reflecting Moore Industries’ standard approach to isolating analog signals for safe, long-term operation. In practice, this isolated transmitter is used in instrumentation and process-control systems to convert and transmit a standardized 4-20 mA signal to a controller, PLC, or data acquisition device while preserving electrical isolation and signal integrity across differing ground potentials.