uxcell Electrical Voltage Detector Pen, 12-220V LCD Digital Multi-meter Volt Meter AC/DC Inductive Electric Pen for Null Wire Judgment, Slot Screwdriver Type Tester 10pcs AC VOLTAGE TESTER PEN - Voltage detection range 12-220V SAFELY ELECTRICAL TESTER - Voltage frequency can be distinguished by beep and LED indicator. CONVENIENT - Easy to carry, current detector is light, compact stick/pen style. HIGH QUANTITY - 100% Brand new and High quality! Package Content: 10 x Voltage Tester Pen