This electric tester can check currency, driver's license, official ID card, passport, money Voltage test pen with LED flashlight, can be used even in dark environments; 5 minutes without operation, automatic shutdown, energy-saving electrical tester- voltage frequency can be Distinguished by buzzer and LED indicator. The sound is loud enough to hear medium equipment noise, distinguish live wire and neutral wire through different frequency alarm sounds and LED indicators; voltage detection range30-1000V AC non-contact voltage detector - when the equipment is close to the AC voltage is higher than the specified voltage When within range and not in contact with the object under test, it flashes and beeps, along with a beep and an LED to indicatethat the safety measures are adequately loaded. Instructions: 1. When the pen tip senses or detects voltage, the white part of the pen tip will light up and buzz. It is easy to detect the live wire and know which line has dangerous voltage. 2. There is a button in the middle of the induction electric pen. Press it, and a bright LED on the pen head will light up. It can be used as a flashlight. In a dark working place, you can easily complete the line measurement workwithout using a flashlight Instrument maintenance: 1. This instrument is safe and insulated. To ensure safety, please keep it dry and clean during storage and use. 2. If the LED light is not on, please replace the battery. When it is not used for a long time, you need to take out the battery to prevent leakage and damage to the instrument. Power supply: 1.5V AAA battery x2 (not included) Shipment Quantity: 1 piece Package Contents: Only the above package content, other products are not included. Size: 153*25*19mm (Reminder: The size is measured by hand, please allow 1-2cm measurement error) Color: orange (Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.)