Enhanced security structure: Features V Alert near field sensing and standard measurement to safely distinguish live / neutral wires in complex electrical setups Efficient Power Solution: Built with a USB rechargeable battery and included charging cable, this device minimizes battery replacements while consistent action for prolonged use Cordless potential Testing: This electrical pen enables wire assessment of alternating current from 12V by contacting the probe to metallic surfaces and pressing the activation button, with readings shown on the clear LCD screen Clear Display Functions: Includes an extra large clear LCD for effortless reading and an integrated brilliant lighting source to illuminate dark workspaces during installation or maintenance tasks Keywords: LCD testing pen, lighting tester Intelligent circuit assessment: proposals various capabilities including circuit interruption locating, leakage current checking, and surrounding temperature display along with exact potential difference reading for professional electrical work Keywords: technician gear, circuit checker, Manufacturer: TFAOYS