The M4M 20 multifunction meter is a versatile device designed for engineers. It features 2 digital outputs, accepts Rogowski coils, and supports Bluetooth and Modbus RTU communication. The meter can be powered by an auxiliary supply ranging from 48-240 VAC/DC at 50/60 Hz. It has an accuracy class of 0.5S to IEC61557-12 and a degree of protection rating of IP54. This meter offers multi-measurement capabilities, including currents, voltages, frequency, power factors, and timers. It allows for metering of active energy, reactive energy, apparent energy, and 4 quadrants energy (Import/Export). Additionally, it provides complete monitoring and power quality analysis through data recording and logs. The M4M 20 features a graphic colour display with a 5 pushbutton keyboard for easy navigation. It is designed for panel mounting with dimensions of 96x96 mm.