Overview: High quality pocket-sized voltage detector Technology & continuous self-test Upon detection, tip glows & buzzer sound CAT IV 1000 V for added protection With a super bright LED light Pen shape, mini size, easy to use & portable Specification: Test voltage range: 90-1000V ACPower Supply:2 x 1.5V AAA (Not included) Range:50 to 500 Hz Operating Temperature:-10°C ~ 50°COperating Humidity ≤95 Safety Rating: 1000V, CAT IVWeight Approx:45.7g Size Approx:2.3 x 1.5 x 20.5