Fielect 3pcs Voltage Detector Pen Tester Screwdriver Contact Voltage Tester Electrical Circuit Tester Detector Electroprobe DC100-500V Red

Working Voltage:DC100-500V. Before testing,it is necessary to insert the screwdriver to the bottom,hold the finger against the end of the handle.The neon tube turns light when there is electricity and operate safely. You can use it to directly test DC voltage as a voltage tester pen,you also can use it as a screwdriver. Suitable for use to home,shop,garage,automotive,motorcycles,boats,personal watercraft,snowmobiles. They are designed for electricians.Automatically detects and indicates and standard voltage allowing broad application.Can be used as a screwdriver.Designed for detection of standard voltage in cables,cords,circuit breakers,lighting fixtures,switches,outlets and wires.Also excellent for detection voltage in security,entertainment,communications,environmental control,and irrigation systems.