1)Single phase electrical socket meter 2)ANSI standard 3)Anti-Tampering function This instrument quantity is accurate, the performance ... ),15(60),20(80)A voltage110V,120V,220V,230V,240V meter form 1S,2SNominal Voltage (Un) 120, 120/240, 120/208 ... to 1.2UnImpulse Voltage6 kV, 1.2 / 50 μs Single Phase Electronic Socket Meter