Welcome to our Non-Contact Voltage Detector Here are 5 key features of this product: 1. Insulated Housing: The voltage detector features an insulated housing for enhanced safety during testing, allowing for non-contact and isolated operation. 2. Portable Pen-Shaped Design: With its pen-shaped design and convenient clip, it can easily attach to your pocket, ensuring that it's always within reach during repairs. 3. Adjustable Sensitivity: The sensitivity of the detector is adjustable, offering three levels to suit various needs in residential, commercial, and industrial environments. 4. Audible Alarm and Security Lighting: Different frequencies of alarm sounds help distinguish live voltage, while the LED flashlight illuminates dark work areas. 5. Size and Delivery: The detector's dimensions are x inches, and it comes with a pen clip. Thank you for considering our Non-Contact Voltage Detector Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.