Helps you avoid dangerous shocks: The fully insulated probe tip eliminates the risk of contact with live electrical wires, allowing you to test or install electrical equipment with ease. It also has two CAT ratings (CATIII 1000V and CAT IV 600V) and meets CE requirements. Easy to use: place the tip of a non-contact voltage tester near a device or wire where AC voltage is present. emitting an ear piercing beep or the red tip for visual indication of high voltage at work. The frequency of the beep will increase if the device has detected a higher voltage. Dual Range (12-1000V/48V-1000V): Press the S button to adjust the sensitivity can choose according to your needs to detect the voltage on electrical AC throughout the house: outlets, cords, switches, circuit breaker, power strip, etc. The NCV sensor automatically recognizes the voltage and displays it on the bar graph. Multi-purpose device: It has a bright LED flashlight and an easy-to-read LCD screen that you can use in the darker work areas, also an auto-off function to save energy, and a low power indicator to show when the battery voltage is below 2.5V. and has a pen hook so it can be clipped to a pocket. What You Get: 1 non-contact AC voltage detector pen Number of products: 1 piece The color red Size: 21*167.45mm