4 In 1 Multi Purpose Tool: Combines alternating current measurement ( 12V), proximity detection, wire identification, and temperature reading in single device, ideal for home and commercial electrical diagnostics Tone Visual measure: Features a responsive LCD display with alternating light colors Changes to alert color when detecting active wires, and shows secure color for neutral conductors or NCV mode, ensuring easy recognition in noisy or dimly lit spaces Built In Power Cell & Long Standby: Includes an integrated 400mAh rechargeable battery with USB charging port, eliminating the need for replaceable cells Provides extended standby time with functions Sensing & Fault Detection: Identifies electrical signals without direct through visual cues and sound alerts, great for quickly locating breaks in hidden wiring to improve diagnostic speed Industrial & Portability: Complies with II 600V standards, made from flame resistant ABS with a clip for easy carrying Features a built in light for visibility in dark electrical panels, Manufacturer: Whoasyst