The Trumeter MAX meter M21 with negative LCD is an all-in-one meter with endless configuration options. The M21 can be configured to measure amps, voltage, frequency or power (watts, VA, VAr & power factor) for high voltage applications. It is designed for a wide range of power monitoring applications, the APM-MAX combines the instant visual representation of an analogue meter with the speed and accuracy of a digital meter for instant recognition and precision measurement.

It has programmable RGB backlight for endless configuration option
Modbus RTU/TCP IP included for seamless integration
It has 25% larger screen than standard APM