Feature: 1. High hardness and good electrical conductivity2. Maintenance electrical measurement / screwdriver assist3. Humanized clip design for easy electrical maintenance and portability4. Fully insulated anti-fall material, durable and improved safety performance5. Self-checking LED high-brightness bulbs: high-brightness works smoothly and is still clearly visible in the sunFunction:1. Neutral line/live line detection: the test result LED red light and green light indicate live line, green light indicates neutral line2. Detection along : LED light on means is unblocked, LED light off means is disconnected3. Wire switch: if the plug and the inner core of the wire are intact, the light will be on, and if it is not on, it means that the core wire is in poor contactSpecification:Uses: can be used in electronic factories, electrical appliances, car maintenance, household, etc., widely usedBattery model: LR41 X 3 (Included)Measuring range: voltage 70-250VMaterial: plasticcolour: transparentPackage Contents:4 x Voltage Tester PenOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.