INGCO AC 12V–300V Digital Voltage Tester Pencil – LCD Screen, Dual Sound & Light Alarm, Auto Power Off, and Included LR03 AAA Battery (HSDT33001)

Testing outlets, circuit breakers, switches, and wiring for live voltage with non-digital or basic neon test pencils leaves room for guesswork and increases exposure to electrical hazards. Conventional testers fail to provide clear visual feedback or distinct audible warnings in noisy or dimly lit working environments. The INGCO HSDT33001 AC 12V–300V Digital Voltage Tester Pencil is a compact, high-precision electrical diagnostic tool engineered for safe, instant, and reliable non-contact voltage detection. Designed with a digital LCD screen and a dual alert system, this pen-style tester allows electricians, maintenance technicians, and homeowners to detect live AC currents without direct wire contact.

The enhanced safety and operational accuracy of this digital test pencil stem from its broad AC 12V–300V sensing range combined with real-time visual and audible signaling. When live voltage is detected, the integrated speaker sounds an alarm while bright light indicators illuminate, instantly alerting the operator. Built with smart battery-preservation features—including an Auto Power Off function and a Low-Battery indicator—the HSDT33001 comes ready to work right out of the box with one included LR03 AAA battery.

Key Features

• AC 12V–300V Wide Sensing Range – Capable of detecting live AC voltage across standard household mains, low-voltage control circuits, and commercial power lines.

• Clear LCD Digital Display – Provides an easy-to-read visual indication of live voltage presence and status.

• Dual Sound & Light Alarm System – Triggers simultaneous audible beeps and bright visual light flashes upon sensing live voltage for maximum safety in noisy or dark areas.

• Auto Power Off Function – Automatically powers down after periods of inactivity to conserve battery longevity.

• Low-Battery Indication – Displays a low-power icon when power is running low, ensuring accurate testing without unexpected shutoffs.

• Ergonomic Pen-Style Design – Features a lightweight body with a built-in pocket clip for easy one-handed operation and portable storage.

Technical Specifications

• Brand: INGCO

• Model: HSDT33001

• Product Type: Pen-Type Digital Voltage Tester / Test Pencil

• Testing Voltage Range: AC 12V to 300V

• Display Type: LCD Digital Display

• Alarm Modes: Integrated Sound (Buzzer) & Light Alarm

• Power Supply: 1 x LR03 AAA Battery (Included)

• Smart Features: Auto Power Off, Low-Battery Indicator

• Packaging Presentation: Packed by Double Blister

• Primary Applications: Live AC wire tracing, outlet testing, breaker verification, switch diagnostics, and electrical fault detection

Ideal For

Electricians, HVAC technicians, facility maintenance staff, electronic repairers, and homeowners seeking a safe, reliable, and user-friendly digital voltage tester with sound and light alerts.

Package Includes

• 1 x INGCO HSDT33001 Digital Voltage Tester Pencil

• 1 x LR03 AAA Battery