The M4M 20 multifunction meter is a versatile device designed for engineers. It features 2 digital outputs, bluetooth, and Profibus DP-V0 communication. The meter has an auxiliary supply of 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). In addition to its measurement functions, the M4M 20 provides complete monitoring and power quality analysis through data recording and logs. It features a graphic colour display with a 5 pushbutton key board for easy navigation. The meter is panel mountable with dimensions of 96x96 mm.