Check the listing for details. Smart Non-Contact Voltage Detector Electrical Pen AC Voltage Tester 12-1000V. Condition: New. Listed at 9.99 USD. The voltage detector pen can detect whether wires are charged (alternating current),and is suitable for home circuit maintenance and production electricity detection. The high sensitivity range is 12-1000v (only when the H/L lamp is on) and the low sensitivity range is 48-1000v (default mode); LED flashing alarm,neutral or weak electricity can only trigger yellow light,only high electricity can trigger red light; Illumination light (press the light key to open); Note: Do not apply more voltage than the rated voltage indicated on this product. Item Specifications: Item Type:Voltage Detector Pen Voltage Detector Type:Non-ContactHigh Sensitivity Range:12-1000VLow Sensitivity Range:48-1000V(Default) Features:Small,Flashlight,Laser Positioning,High/Low Sensitivity Switch Item Size:6.6in*1.14in (16.8cm*2.9cm) Package Included: -1*Electric Pen-1*Instructions Page