Panduit® VeriSafe™ Absence of Voltage Tester, 1/2/3-Phase, 10 ft Lead Length, 600 VAC/VDC Maximum Measurable Voltage, LED Indicator Display, 3.6 VDC Lithium AA Battery, Battery Supply, 50/60 Hz Frequency, Environmental Conditions: 32 to 140 deg F Operating, NEMA 1/12/4/4X/IP20/IP66 Enclosure