Using the 4 switch inputs that allows to control functions to be added for specific applications. A power quality meter which is complex and an ideal choice when continuous monitoring. The PQM II provides metering for power factor, cost of power, frequency, energy use, etc. It caters to utility, industrial, and commercial application which has a power quality analysis tool. Pulse input totalizing is for its protection and control, plus it has a keypad with large illuminated 40-character display that makes it easy to use.