ITEM NAME:12-1000V High Sensitivity Electrical Tester Pen Non-Contact AC Voltage Detector Descriptio n Description: The perfect kit for the home and electrical industry Ideal for testing power cables, circuit breakers, wall sockets, junction boxes, fuses, etc. Just press the button, when there is no voltage, the white LED can be lit all the time. “beep†and red flashing LEDs indicate the presence of voltage Completely insulated, without exposed metal or conductive parts Long life and low power consumption Compact, safe and easy to carry Specifications: Material: Plastic, Metal Color: Yellow Size: 145*17*13mm Product Description: Automatic Shutdown For About 5 Minutes Battery 2*1.5V AAA Alarm Mode: Light Alarm Storage Temperature: -10 To 50  °C Working Temperature: 0-40  °C Package Included: 1 * Voltage Detector Pen Note: 1.Due to the manual measurement and different measurement methods, please allow 2-3cm deviation. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! 12-1000V High Sensitivity Electrical Tester Pen Non-Contact AC Voltage Detector.Ideal for testing power cables, circuit breakers, wall sockets, junction boxes, fuses, etc. Alarm Mode: Light Alarm. Storage Temperature: -10 To 50  °C. Working Temperature: 0-40  °C. We want to make sure you are happy with our item.