The M4M 20 multifunction meter is a versatile device designed for engineers. It features 2 digital outputs, bluetooth and Bacnet/IP communication, and an auxiliary supply of 48-240 VAC/DC at 50/60 Hz. With an accuracy class of 0.5S to IEC61557-12 and a degree of protection IP54, this meter ensures precise measurements and reliable performance. The meter offers multi-measurement capabilities, including currents, voltages, frequency, power factors, and timers. It supports metering for active energy, reactive energy, apparent energy, and 4 quadrants energy (Import/Export). This allows for comprehensive monitoring and power quality analysis using data recording and logs. Equipped with a graphic colour display and a 5 pushbutton keyboard, the M4M 20 provides a user-friendly interface for easy operation. Its panel mount design with dimensions of 96x96 mm makes it suitable for various installations. In summary, the M4M 20 multifunction meter is a feature-rich device that offers accurate measurements, extensive metering capabilities, and convenient user interface. It is an ideal choice for engineers seeking reliable monitoring and power quality analysis solutions.