This document introduces the 3B42 / 3B43 / 3B44 Rev. 0 series products from Analog Devices. The product is an AC sine wave input module used for industrial signal conditioning, isolation, and filtering. It utilizes AC averaging technique to rectify, amplify, and filter 50 Hz to 400 Hz sine wave signals. The module accepts inputs ranging from 20 mV to 550 V rms and provides an rms output reading. It also offers simultaneous precision voltage and current outputs. The module circuitry can withstand 130 V rms at the input screw-terminals. All 3B42, 3B43, and 3B44 series modules are mix-and-match and hot swappable.