Our holiday light tester lets you instantly locate that one bulb that's stopping the others from lighting or flashing. Just point this hand held tester at each bulb to find out which one is defective. Red light indicates when you've got a bad bulb. Test individual bulbs and fuses before you add to strand. Measures 5 1/2"L. Button cell batteries included.
Trustpilot
2 weeks ago
2 months ago
