Specifications: Battery model: LR41 x 3 (included) Measuring range: voltage 70-250V Bit material: vanadium chromium steel Shell material: ABS Size: about 140x2 0mm/5.51x0.79in features: 1. High hardness and good conductivity 2. Repair electrical measurement/screwdriver assistance 3. Humanized clip design, easy for electrical maintenance and carrying 4. Fully insulated, durable and safety enhancing fall protection materials 5. Self priming high brightness LED bulb: high brightness works stably and is still clearly visible in the sun Application: It can be used in electronic factories, household appliances, automobile maintenance, household appliances, etc Product function: 1. Neutral line/electrification detection: LED test results: red light and green light indicate electrification, and green light indicates neutral line 2. Detection along the line: when the LED light is on, the line is unlocked; when the LED light is off, the line is disconnected 3 Cable switch: if the plug and cable core are intact, the lamp will light up. If it does not light up, it means that the central cable has poor contact. Note: Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color displayed in the image. Thank you! Due to manual measurement, the allowable measurement deviation is 1-2cm Package: 1 * test pen EU Responsible Persons information: Name: PI NETWORK SARL Address:38 rue Dunois 75647 Paris CEDEX 13,75013,FR E-mail:friedlichrichter@outlook.com This merchant is committed to only offering products that comply with the General Product Safety Regulation.