'Tis the season to untangle last year’s Christmas lights... only to find a few bad bulbs in the mix. Don’t trash that string yet: Now you can find the problem and fix it with the LightKeeper Pro.
A long, long time ago there was a great Design Idea for a simple gadget to find a bad bulb in a series-connected string of Christmas lights: This is really simple and works great, but it exposes the ...