Fielect 10pcs Tester Screwdriver Circuit Tester Pen Electric Contact Voltage Tester Dual Head Slot Phillips Screwdriver Detector 100-500V

Working Voltage:AC/DC 100-500V. 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 AC voltage as a voltage tester pen,you also can use it as a slot phillips screwdriver. Suitable for use to home,shop,garage,automotive,motorcycles,boats,personal watercraft,snowmobiles etc. 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.