Double Mode Voltage Detection: Features both contacts and noncontact voltage detection mode, automatically switching to non contacts measurement when not value is detected after releasing the touch, ensuring efficient and accurate AC3-600v voltage testing Live Neutral Wire Identification: Allows users to identify live and neutral wires by long pressing the touch and inserting the metal tip into outlets, displaying red screen with fast beeps for live wire and green screen with 0V for neutral wire Enhanced safe Protections: Built in overload protections mechanism prevents device damage from excessive current, offering additional safe for technicians working Ergonomic Design: Features a handle durability ABS with antiwear and impacts resistant, reducing hand fatigue during extended use for home, industrial, and professional electrical testing applications Intelligent noncontact NCV Induction Systems: Incorporates intelligent noncontact voltage sensing with green backlight for weak electric fields and red backlight with alarm for strong electric fields, Manufacturer: Kalttoy