Opto 22 SNAP-AIMA-iH and SNAP-AOA-23-iH 2-channel analog input and output modules work on a 4-20mA current loop with HART communications protocol to extract status, diagnostics and other information from smart devices. The modules include LED indicators to provide status information, such as HART channel operation, communication errors or zero loop current or voltage readings.

Opto 22; 951-695-3000; www.opto22.com