EKM-OmniMeter I v.3 -- Our Most Advanced Universal Smart Meter. ONE METER to meet all your metering needs! Single-phase 120V 2-wire or single phase 120/240V 3-wire, 120V to 480 volts, 3-phase, 3-wire 120 to 400 volts or 3-phase 4-wire, 120 to 480V, 50/60Hz , 50/60 Hz Supports CTs from 100A to 5000A. This meter will work with any system that is commonly used in the world. 8 times faster RS-485 communication speeds for remote reading. Uses our full range of compact external CTs. CT ratio can be set internally to work with up to 5000 amp CTs (no multiplier needed). Fully supported by our FREE remote reading, EKM Reader software.