OMRON
Smart Power Monitor
KM50-E1-FLK
Applicable circuits: Single-phase, 2-wire: 100 to 480 VAC;
Single-phase, 3-wire: 100/200 VAC; Three-phase, 3-wire: 100 to 480 VAC;
Three-phase, 4-wire: 85 to 277 VAC.
Power supply voltage (shared): 100 to 240 VAC.