allsun Christmas Light Tester with 50 Bulbs — Non-Contact Voltage Detector, Bulb & Fuse Checker for Incandescent Lights (12-600V)

All-in-One Christmas Light Repair Toolkit

The allsun Christmas Light Tester is a compact, purpose-built kit designed to simplify holiday setup and repair. It combines testing, diagnosing, and light-touch maintenance into one tool, making it easier to keep traditional incandescent strings vibrant without guessing at the cause of a dim bulb or blown fuse.

Key capabilities

• Non-contact voltage detector for safe screening of live wires from 12 to 600 V, with an adjustable sensitivity dial for precise readings.
• Bulb tester that lets you check individual bulbs on a string, helping you isolate failures quickly.
• Fuse checker to verify fuses in your light sets, reducing guesswork during repairs.
• Built-in bulb remover to extract stubborn bulbs without damage to sockets or wires.
• Includes 50 replacement bulbs (2.5 V, 0.17 A, 0.43 W) in five colors for quick swaps and color-matching.
• Powered by two LR44 button cells; easy access to the battery compartment and straightforward replacement.
• Designed for traditional incandescent lights; not compatible with LED strings.

Real-world use and benefits

Imagine preparing for a festive tree or garland, where a quick scan reveals which bulb is live and which is not. The non-contact detector helps you assess power flow without unplugging strings, while the bulb tester confirms dead sockets before you swap components. The included bulbs let you replace a mismatched bulb on the spot, preserving the overall look of your display. The built-in remover eases the task of freeing stubborn bulbs, saving time when strands are densely strung or hung high.

The GK13 tester folds into a slim profile, so it travels easily in a toolbox or holiday décor bag. The 50 bulbs provide a ready-to-use option for immediate repairs, and the simple battery setup keeps maintenance hassle-free during busy decorating days. While it targets incandescent lights, the tool cluster supports a broad range of typical holiday displays and helps you maintain a bright, even glow across multiple strings.

What’s included and compatibility

• 1 x allsun GK13 Christmas light tester
• 50 replacement bulbs in five colors (Red, Purple, Blue, Pink, Green)
• 2 x LR44 button cells (pre-installed or included)
• Battery insulation sheet and quick-start notes

Tip: Open the battery cover and remove the insulation sheet before first use to ensure the device powers up smoothly. This tester excels for traditional incandescent light strings and is not intended for LED-based setups.