Digital AC Voltage Detector Pen | NCV Tester with Live Wire Detection

This digital AC voltage detector pen provides a safe and convenient way to identify live electrical circuits without direct contact. Using non-contact voltage (NCV) technology, it detects AC voltage presence and helps distinguish between live and neutral wires, reducing risk during electrical inspections.

The tester features a clear LCD display combined with audible and visual alerts to provide instant feedback when voltage is detected. Additional environmental measurements, including ambient temperature and humidity, offer extra context during inspections.

Designed for practical field use, the pen includes a built-in flashlight for low-light environments, automatic power-off to conserve battery life, and a slim handheld form factor with anti-slip grip and pocket hook. This makes it suitable for electricians, technicians, and DIY users alike.

Typical applications include:

• Non-contact AC voltage detection

• Live and neutral wire identification

• Electrical installation and maintenance

• Outlet, switch, and cable checks

• Home and workshop electrical safety checks

Key Features

• Non-contact AC voltage (NCV) detection

• Live and neutral wire identification

• Wide voltage detection range

• Sound and light warning alerts

• Clear LCD display

• Built-in flashlight and backlight

• Ambient temperature and humidity measurement

• Automatic power-off and low battery indication

• Slim pen-style design with pocket hook

Functions Overview

• NCV Voltage Detection: Detects AC voltage without direct contact

• Live Wire Detection: Identifies live vs neutral conductors

• Temperature Measurement: −10°C to 60°C (14°F to 140°F)

• Humidity Measurement: 5% to 99% RH

• Alerts: Sound and light reminders when voltage is detected

• Lighting: Flashlight for dark work areas