Voltage detection from 90 to 1000 V ac; suitable for a wide range of residential; commercial and industrial needs. Integrated clip design, optimized for pocket storage NEW! Always on; using special low power circuitry to sustain battery life and ensure your 2AC is always ready. Category IV " 1000 V overvoltage rated product for best in class user protection Integrated clip design; optimized for pocket storage Suitable for a wide range of residential, commercial and industrial needs