2TAZ662012R2001

The ABB M1M 20 I/O is a digital panel-mounted power meter designed to monitor electrical parameters and energy consumption in industrial and commercial electrical distribution systems. It features an LCD display and supports Modbus RTU communication over an RS-485 interface, enabling integration with PLCs, SCADA systems, building management systems and energy-monitoring platforms.

This model includes two digital inputs and two digital outputs, allowing it to support external status monitoring, pulse signaling and selected automation functions. It operates from an auxiliary supply of 100–230 V AC/DC and supports current transformer (CT) inputs of 1 A or 5 A. Its active-energy accuracy is specified as ±0.5%, making it suitable for energy monitoring, electrical panel instrumentation and automation applications.