1、Smart LED Display: Featuring an intelligent LED display, this electrical tester allows electricians to quickly assess the status of circuits with accuracy and efficiency. 2、Inductive Electrical Tester: With a blue light large screen and functions for detecting faults, identifying live and neutral wires, as well as testing DC currents, this tester ensures circuit safety and reliability. 3、Convenient Illumination: Equipped with a built in light function, this tester is perfect for use in dimly lit environments, providing added convenience and visibility for electricians. 4、Accuracy Testing Capability: The accurate testing function of this electrical tester assists electricians in swiftly pinpointing and resolving electrical issues for efficient troubleshooting. 5、Industry Necessity: Designed for common use in the electrical industry, this user friendly tester is a trusted tool that offers convenience and assurance in professional electrical work. Item Type: Electrical Tester Pen Material: Plastic; Metal Battery: Battery x 3 (Included) Scope of Use: Suitable for directly detecting 12-220V AC DC and indirectly detecting live and neutral wires, breakpoints, and leakage in AC circuits. It can also detect continuity of uninsulated conductors. Size: Approx. 26 x 143mm / 1.02 x 5.63in 1 x Voltage Tester Pen 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. Sold by-YJL official store