This testing Pen can detect the DC and AC voltage of electrified parts. Features: - High-quality Treatment: The bit of the testing pen is forged with chrome vanadium steel and overall heat treatment, featuring anti-slip and durability. - One-hand Operation: With compact appearance, this testing pen is comfortable to handle and easy to operate. - Non-contact Detection: Capable of detecting whether the object is electrified or not and automotive high-voltage ticking line in non-contact method. - HD LCD Blu-ray Screen: With the large blue light display screen, the test results can be read clearly in the dark. - LED Auxiliary Lighting: Can be use as an emergency flashlight. Press and hold the auxiliary light switch to facilitate use at night when there is a power outage or low light. - Wide Application: Fire wire detection, zero line detection, line on/off detection, direct current detection, electric field induction test, high voltage induction test, leakage detection. Specifications: Material: Alloy steel+ABS Color: Yellow+Green Power Supply: 3 * 1.5V AG10 battery (NOT included) Detection Range: DC Voltage: DC 12/36/55V AC Voltage: AC 70-250V Item Size: Approx. 143.5*26*18.7mm / 5.65*1.02*0.74in Item Weight: Approx. 30g / 1.06oz Package Size: Approx. 145*28*20mm / 5.71*1.1*0.79in Package Weight: Approx. 35g / 1.23oz Packing List: 1 * Testing Pen