Defective Bulb shunts cause most light set failures. Simply plug your LightKeeper Pro into the light set and pull the trigger. The LightKeeper Pro sends a pulse through the light set, finds the bad bulb and fixes the shunt allowing the light set to work properly.
| Dimensions | : | 1-1/2 in H x 7 in W x 4.7 in D |
| Includes | : | (3) 1.5 V Battery |