Product Description: This new type of pen screwdriver has two colors: red and orange. It can detect the voltage of the electrified part, including AC and DC. Three AG10 button batteries are used for power supply (batteries are not included) and LED lighting for easy use after power failure. AG10 battery parameters : Voltage-Capacity (mAh) - Load Resistance () - Diameter Size (mm) - Height Size (mm) - Weight (g) AG10 1.5v-80-15K-11.6-3.1-1.10 Features: It can use non-contact form to detect whether the object is electrified or not, and can detect automobile high-voltage tapping line. Blue Display Screen: Test in a dim environment can also see the value clearly. LED Lamp lighting, easy to find lines in dim environment, and can be used as emergency flashlight. Specifications: Material: Plastics Size: 143*36*18.7mm/5.63*1.42*0.74" Weight: 30g Detection range: DC Voltage: DC12/36/55 V AC Voltage: AC70~250V Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow slight measuring deviation due to manual measurement. Included: 1 X LCD Digital Display Voltage Test Pen