HANMATEK AC3 Voltage Tester, Non-Contact Electrical Tester Pen with LCD Display, Live Wire Check, Continuity & Battery Polarity Test, AC 12–300V, Dual-Color Backlight, Flashlight, Auto Power Off

The HANMATEK AC3 Voltage Tester is a multifunction electrical testing pen designed for fast, safe, and accurate troubleshooting of home and industrial AC circuits. Powered by a single 1.5V AAA battery, the AC3 features a 12×27.5mm LCD display, dual-color safety backlight, and a built-in flashlight for low-light work. Upon powering on, the tester defaults to NCV (Non-Contact Voltage) mode, allowing you to detect AC electric fields without touching live conductors. With three sensitivity levels, the AC3 helps identify live wiring and locate breaks along a line. Pressing the mode button switches to Live Wire Judgment, which distinguishes live from neutral when the probe makes direct contact. The continuity mode (C) lets users determine breaks in wires or check simple circuits through finger contact. The tester can also determine battery polarity (P) when touching positive and negative terminals. In AC Voltage Measurement Mode, users can obtain direct numeric voltage readings from 12–300V, suitable for checking outlets, switches, lighting circuits, or appliance wiring. Data automatically holds after the button is released for convenience. Built with automatic shutdown, reinforced insulation, and CAT I safety level, the AC3 is compact, lightweight, and easy to carry—an essential tool for electricians, DIY homeowners, maintenance workers, and HVAC technicians.

• 4-in-1 Electrical Testing Tool:The AC3 combines non-contact voltage detection (NCV), live-wire identification, continuity testing, and battery polarity check in one compact tool. Ideal for home users and professional electricians.
• Accurate AC Voltage Measurement (12–300V):Touch the metal probe to a live conductor to measure real AC voltage values. Readings are shown on the LCD with automatic data hold after the button is released, making mains voltage troubleshooting easier and more reliable.
• Dual-Color Backlight for Safety Alerts:Green backlight indicates normal operation. Orange backlight automatically turns on when voltage exceeds 36V, reminding users to operate with caution during live electrical work.
• High-Sensitivity NCV with 3-Level Detection:Detects electric fields without touching bare wires. Three sensing levels with increasing beep frequency allow you to identify live wires and locate breakpoints along a conductor.
• Compact, Durable & Easy to Use:Features a bright flashlight for dark environments, clip-on design for easy carry, and auto power-off in 5 minutes. Powered by one AAA battery (included). Safety rated CAT I.