Automation has been a trend along with the streamlining of power receiving units such as power plant and factory. Voltage/max. demand current/demand current/instantaneous current/power/reactive power/power factor/frequency/watt-hour/var-hour can be measured and monitored with one unit. Most suitable for measuring/monitoring of incoming circuit from low voltage circuit to high voltage circuit. Energy-saving management is possible with watt-hour measuring. FEATURES (1) Monitoring data of power system from low voltage to high voltage can be collected and monitored with RS-485. (2) System expansion is easy as up to 31 units (max.) can be connected to RS-485 communication line. (3) Setting change is possible with easy operation from front. (4) Compatible with 2-screw mounting/DIN rail mounting. (5) Communication protocol A is on the same line with our product LCD meter QLC-110, DLC-110 and measuring data can be collected by communication. (6) Data collecting system can be constructed with power monitoring software PMS-01 (version2.00 or up) by communication protocol A. (7) Communication protocol C is PMT standard protocol which can take advantage of PMT functions most.