Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

Light bulb tester

Ratings & Reviews for LightKeeper Pro Light bulb tester

4.2
322
Review
 4.2 out of 5
322 Reviews


84% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The product is highly effective at troubleshooting and repairing Christmas lights, with the majority of users finding it a time-saving and worthwhile tool. Key features like the voltage detector and ability to send an electrical pulse were praised for their effectiveness in identifying and fixing issues such as burned-out bulbs or broken wires. While a few users had mixed results, the overall consensus is that the product is an invaluable asset for reviving old lights and avoiding the need for replacement, making it a recommended item for those with pre-lit trees or extensive light displays.

Customer review summary generated by AI, including incentivized reviews.
322 Customer Reviews

Just what I needed

Would Recommend

After years of trial and error with string lights, this simple tool has saved me hours and a LOT of frustration! It works exactly as advertised and I will recommend it to everyone I knww.

December 9, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

No Good!

Would Not Recommend

Seems the only thing this is good for is wear out expensive little batteries. When trying to repair two different light strings, the batteries went dead after clicking the repair switch about 12-15 times.

December 7, 2018
Sweepstakes
Was this Review Helpful ?

Repaired a half lit tree!

Would Recommend

We went to set up our 10 year old tree, and the bottom section was first and only half of it lit. After 30 minutes of checking every bulb, we used Google to help us find the problem. LightKeeper Pro popped up several times. It was only $20 so we decided to try it before trashing the tree and spending hundreds on a new one. By taking out a bulb and inserting the bulb less fitting into the light pro and pressing the trigger 32 times, all the unlit lights came on. We were amazed. We had problems wi...

December 7, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

Easy to use and it saved my tree!!!

Would Recommend

I bought this less than an hour ago and my tree lights are now up and twinkling! I read the instructions FIRST then proceeded with my attempt to fix my lights and was successful. It was extremely easy to use. The LightKeeper comes with 10 spare bulbs which I did have to use to switch out quite a few throughout the process. It literally took me 25 minutes to get my 7.5ft tree back in business.

December 7, 2018
Was this Review Helpful ?

Awesome!

Would Recommend

We have a 10’ tall Christmas tree and almost half of the lights didn’t work, we were about to look for another tree and did some research (trees like ours way too expensive) and came a cross a video about this product. Gave it a change and O M G! Saves us a lot of money and only took like we could say “one day “ due to the size of our tree and pretty much all the lights work now!! So it was worth the time!! And I really love the light keeper pro!! Thank you!!

December 7, 2018
Was this Review Helpful ?

It’s a miracle

Would Recommend

I was skeptical buying this, but it really does work. I brought back to life strands of lights that hadn’t worked in years.

December 5, 2018
Sweepstakes
Was this Review Helpful ?

Best Christmas light gadget!

Would Recommend

I don’t know how I have gone this long without this tool. This has saved me hours of frustration when working with a Christmas lights!!

December 4, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

Wow!! Simple but it works!!

Would Recommend

Yes, this weird thing works. It's like a Swiss Army Knife for your tree lights. The instructions tell you how to use it, but let's face it...you will probably just YouTube it like I did. Lights were out; I used the shunt closer 30+ times. I then used the mini volt meter to follow current until it stopped, found the bad bulb, and boom! It worked!! Get this and it will save you from those four letter words that always follow....

December 4, 2018
Sweepstakes
Was this Review Helpful ?

Watch videos before starting!

Would Recommend

Bought it and thought it was not that great, but after watching a couple of the U-Tube videos, I see what I was not doing wrong. Be patient!

December 4, 2018
Sweepstakes
Was this Review Helpful ?

Complete tool to fix incandescent light sets

Would Recommend

After my wife trying for Four hours to locate the bad bulbs in two string of lights on our pre lit Christmas tree, I made a comment that the following day I would go to Lowes and purchase this item. She said, they don't work I purchase it anyway. After reading the instructions I tried it, within 3 minutes I had both stings working! She could not Believe it Then she said I should have purchased it sooner. Go figure!!!

December 2, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

Tree Light Fix Tool

Would Recommend

Easy to use on our 12’ prelit tree. Tree is about 7 years old. A fed pulls on the trigger and the dead strand was working instantly.I have recommended this tool to several friends and family

December 2, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

Christmas Bob

Would Recommend

I use to have a box of Christmas lights that needed fixed. The main two words here is USE TO. The lightkeeper Pro cut my repair type in half. Its easy to use and eliminates most of the frustration. I do recommend this product.

December 2, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

Time saver!

Would Recommend

Wow, what a time saver. I got home from Lowe's with the tool, and within two minutes, the tree lite's were on.

December 2, 2018
Sweepstakes
Was this Review Helpful ?

Worth the purchase

Would Recommend

Put together my pre-lit tree this year, plugged in the lights and two strands were out. I already have a bulb tester but on pre-lit trees it is very hard to use. On a run to Lowes to purchase new lights to put on my tree I saw this device, bit the bullet and purchased. Within three clicks of the button I was able to get the unlit sections to light and was then able to replace all burnt out bulbs. Just as I was finishing the second set of lights that were out my son pointed out to me that there w...

December 1, 2018
Sweepstakes
Was this Review Helpful ?