Are you looking for a professional and practical electrical tester pen? , ! Our electrical tester pen must meet your needs. This electrical tester screwdriver is made of sturdy ABS, LED and zinc alloy material, durable and sturdy for use. Fine workmanship ensures practicality and durability. Features - ColorTransparent -Material:ABS, LED, zinc alloy - Size: 14.00X2.00X1.60cm/5.50X0.79X0.63in Direct test range: DC 70-250V Induction test range: within 1000V Light color: dual - The electric tester pen is made of high-end material, suitable for home and electrician use. - Wire test: hold the tip of tester pen, contact probe touch or get closer to electric wire, the light will go off at . - test: hold probe with your hand and use the pen tip touch neutral line/ /ground line. The light will on when touching , no light or dim light when touching neutral line. - DC test: hold probe with one hand, touch the positive pole of battery with pen tip, hold battery negative pole with another hand. The light will on means sufficient battery level, dim lighting/no lighting means insufficient battery/ . - Adorable shapes and excellent craftsmanship ensure their popularity among the people. Package list: 1 x tester pen