Features: This electrical tester identifies electrical current from 11V to 450V without direct contact, ensuring secure handling during electrical task. Equipped with current detection, sound alerts, and circuit testing, this tool notifies users with sound and light indicators when active current is detected. Suitable for ease, it requires not complex adjustments or calibration, featuring a comfortable pen grip and straightforward interfaces for smooth, efficient operational. Perfect for diagnosing electrical systems in both home and business, it quickly identifies active cables or verifies the condition of outlets and devices. This electrical tester ensures task consistency and user satisfaction, making it instrument for electrical evaluations. Specifications: Component:ABS Type:Word/crossing Color:Yellow/Red Size:Approx.19cm/7.48inch Package Includes: 1 Set Tester Pen note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.