Dual Range Non-Contact Voltage Tester, Automatically Detects & Indicates Low Voltage, 12-48V AC, & Standard Voltage, 48-1000V AC, Allowing Broad Application, Non-Contact Detection Of Standard Voltage In Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets & Wires, Non-Contact Detection Of Low Voltage In Security, Entertainment, Communications, Environmental Control & Irrigation Systems.