Descriptions :90-1000V AC Electric Voltage Detector Sensor Electrical Tester Pen100% BRAND NEW, non-Contact Detection, safe and easy-to-useThe voltage detector designed for electrical testingSmall and compact pen design for easy carryingSpecification :Voltage Sensitivity: 90~1000V AC (never test the voltage which is more than 1000AC)Operating Temperature : -10°C ~ 50°CStorage temperature: -10°C - 50°COperating Humidity : 80%25Size: 15.3 x 2.5 x 1.5 cmPower by: 2 x 1.5V AAA batteries ( Not included )Cleaning: clean with damp clothThis instrument is only used to judge whether the conductor is live or not.It is a necessary tool for everybody who works with electricity, idea l for testing AC cables, circuit breakers, wall sockets, junction boxes, fuses, etc.All outer surfaces are non-conductive for safetyTouch the wire with the pen tip. If the red indicator lights up, it means voltage exist. Detects voltage without metallic contact.Package Includes:1 x Non Contact AC Voltage Detector Tester Pen