Voltage Detector Voltage Range 20 to 90V AC Indication Audible Visual Audible Alert Yes Battery Type AAA Safety Rating CAT IV 1000V On/Off Switch Yes Length 5 in Switch Type Push Button Special Features Circuit Integrity with A Periodic Double Flash Visual Indication Continually Tests Battery Operating Temp 14 Degrees to 122 Degrees F Includes (2) AAA Batteries Instructions Manufacturers Warranty Length 2 yr