Product Description: Compact, safety, and easy to carry Voltage Range Test: 90-1000V AC Power by: 2 x 1.5 V AAA batteries (not included) Safety classification: CAT III 1000V Size: Approximately 15 x 1.6 x 2.5 cm Weight: About 25 g Contents: 1 Test Note: For the correct operation of the device it is necessary that there is a flow of electrical charge in the cable where it is to be used, it is necessary that there is electrical consumption at the time of measurement, otherwise it will not detect a load ideal for testing electrical cables, circuit breakers, wall outlets, junction boxes, fuses... Small and compact pen design for easy carrying This instrument is only used to judge whether the driver is live or not Operating Temperature: -10C ~ 50C The voltage detector designed for electrical testing