Feature:1. Low voltage, the pen lights green; High voltage, electric pen buzzes.2. The material is insulation and resistant to falling, safer to use.3. With self checking function to know whether the pen battery works on or not.4. LED indicate light, long service time and convenient to view the detection result.5. The nib is designed with a screwdriver, which is convenient for you to open the socket box at any time.6. Pen clip design, mini size and light weight for easy carrying.7. A perfect tool kit for home and electric industry uses.Specification:This testing Pen can detect the DC and AC voltage of electrified parts.Features:Low voltage, the pen lights green; High voltage, electric pen buzzes.The material is insulation and resistant to falling, safer to use.With self checking function to know whether the pen battery works on or not.LED indicate light, long service time and convenient to view the detection result.The nib is designed with a screwdriver, which is convenient for you to open the socket box at any time.Pen clip design, mini size and light weight for easy carrying.A perfect tool kit for home and electric industry uses.Specifications:Quantity: 1pcsColor: transparentMaterial: PC+metalMeasuring range: 70-250VItem length: 155mm / 6.1inScrewdriver size: 17 * 4mm / 0.7 * 0.2inBattery: 3 * AG3, 1.5V, 25mAhPackage size: 185 * 70 * 30mm / 7.3 * 2.8 * 1.2inPackage weight: 22g / 0.78ozPacking List:1 * Voltage Tester PenPackage List:1 * Voltage Tester Pen