Voltage Circuit Tester Pen – 5–120V LCD Diagnostic Probe for Cars & Trucks

Diagnose Electrical Faults in Seconds

Chasing an electrical fault without the right tool wastes time and risks safety. This voltage circuit tester pen gives you instant, accurate readings across a 5–120V range — with intelligent sound and light alerts that tell you exactly what you're dealing with, before you touch a wire.

Smart Detection. Safe Operation.

Equipped with an LCD digital display and a dual-color green/red backlight, this tester pen gives you a clear signal strength reading at a glance. The intelligent neutral and live wire recognition eliminates guesswork — so you work faster and safer on every job.

• ✅ 5–120V detection range — covers automotive, truck, and light electrical systems
• ✅ LCD digital display — real-time voltage reading with signal strength indicator
• ✅ Sound & light alarm — intelligent breakpoint detection with dual-color backlight (green/red)
• ✅ Neutral & live wire identification — automatically judged from LCD voltage reading
• ✅ Wire conduction function — test continuity quickly and accurately
• ✅ Cone-shaped probe — precise contact in tight spaces
• ✅ CE certified — meets electrical safety standards
• ✅ Lightweight & compact — 24cm length, 100g, fits in any toolbox or pocket

Built for Automotive & General Electrical Work

Whether you're tracing a short circuit in a car, testing a fuse, checking a light bulb socket, or diagnosing a wiring fault on a truck, this voltage circuit tester pen handles it all. Multi-functional real-time detection means you spend less time guessing and more time fixing.

How It Works

AC Voltage Detection

Touch the cone probe to the test point. The LCD displays the voltage level in real time. The dual-color backlight and audible alarm activate based on the detected signal — green for safe, red for live. Neutral and live wires are identified automatically from the displayed voltage.

Technical Specifications

• Voltage detection range: 5V–120V (AC)
• Display: LCD digital with signal strength indicator
• Backlight: Green & red dual-color
• Probe shape: Cone
• Material: Plastic
• Dimensions: 24cm × 6cm × 3.5cm
• Weight: 100g
• Certification: CE
• Package includes: 1× Voltage Circuit Tester Pen

Test smarter. Work safer. Every circuit, every time.