PowerLogic Energy Meter is ideal for stand-alone and systems-based submetering applications. This device measure: energy consumption, Power, peak demand power, reactive power, power factor, voltage and current. Rated supply voltage range from 120 to 277 VAC at 50/60 Hz. It include backlit LCD display with1.2 x 3.8 inch size, 1 pulse ouputs, and 1 alarm output. Operating environment of -0 to +50C; Humidity rating of 0% to 95%. Complient to standards ANSI C12.1, UL and cUL certification. Mechanical dimensions are 211 mm in height, 193 mm in width and 76 mm in depth.