Light Keeper Pro

About Us

Ulta-Lit Tree Company originated as the pioneer in affordable pre-lit Christmas trees in 1996. Frequent light set failures led us to search for an affordable solution. In 2004, the LightKeeper Pro was invented.

Our customer’s satisfaction is considered a priority. Providing excellent customer service through our informational website and call center has allowed us to work directly with consumers in order to hear their input, needs, and wants. This has enabled us to improve our products and develop new brand extensions that the market desires.

In 2012, we brought the LED Keeper into the marketplace. The LED Keeper is the only tool able to diagnose and repair LED light sets.

In 2011,Ulta-Lit Tree Company was ranked number 4170 on the list of Inc. Magazine’s 5000 Fastest Growing, Privately Held Companies. In 2012, the company advanced on the list to the ranking of number 3838. In 2013, the company achieved a ranking of 3191.

We’ve sold over 4 million light set repair tools to date and really appreciate our customers. Thank you.

Interview with the Inventor from Ulta-Lit Tree Co. on Vimeo


Sunday, January 10, 2016
“Just wanted to thank you for this great tool! I watched the videos and was able to fix the lights on one section of my prelit tree just like you said! Am so pleased with my success! I will recommend this tool to others! Regards and Happy New Year!”

Wednesday, December 23, 2015
“I just wanted to drop a note on how happy I am on how well the Light Keeper Pro worked for me.  We had one of those reindeer with something around three quarters of the lights not working, and I was really dreading the task of figuring this thing out (I am not a patient person).  I saw the informational Youtube video, bought one at Home Depot but still had my misgivings that this could truly work.  Well, wouldn’t you know it there was a nice note from the CEO in the box saying be patient, learn how to do it and it will fix your lights.  So I did give it my time, learned how to use it and lo and behold after some 15 minutes of work ALL the lights are functioning again.  I seriously didn’t think this was possible. This is really a great product, thanks so much.”

Monday, December 21, 2015
“I just wanted to contact you to let you know. I saw your product on television last year and thought to myself that if that actually worked what a great invention, but I have to admit I had my suspicions and doubts. This past weekend I was out and saw a Light Keeper Pro in a store and decided I would give it a try. I had about a dozen sets of light that either didn’t work or only partly worked and I couldn’t figure out what was going on with them. I put up several thousand lights each year and go through sets of lights year after year. I try to keep them in good working order but I always loose a significant amount each year. I can say I will no longer have this issue. Last night With your amazing product I saved eight sets of lights and that is only because I stopped working on them. Your product doses everything you claim and is a life saver. My wife questioned me when I came home with it and told me I had probably wasted my money. Needless to say she doesn’t say anything now.

Your product is amazing and dare I say magical. If you put up lights and decorate for the holidays this is simply a must have otherwise you are throwing your money away. Light Keeper Pro will always have a place from now on in my decoration emergency kit right next to all the spare bulbs from all the sets I lost before I found your great product.”

Saturday, December 19, 2015
“I just got back in the house after using my Light Keeper Pro to fix the icicle lights on my house.  And, for the second year, I am absolutely amazed on how wonderful it works.  I did have a couple sections that wouldn’t go on and am not sure why as the bulbs all look okay.  Thank you so much for inventing such a great product.  I love it!”

Friday, December 18, 2015
“It took me several days to find time to change out all the bulbs, but last night I turned things back on and the tree is fully lit for the first time in at least four years. (Lesson learned: keep up with replacing burned out bulbs!) Many thanks again for your help, and best wishes for the holidays.”

Wednesday, December 16, 2015
“I bought four sets of web lighting several years ago that I never used. Put up the four sets around columns in front of my house. Even though I checked prior to putting them up part of the last set would not light. I found your product online, ordered it and picked it up today. Watched the short video especially the part about web lighting and fixed the set. I tried last night to find a set to match the other three to replace the fourth but since I bought it so long ago it was not available. Thank you so much! My daughter is returning from college and she will be happy to see the multicolored lights on the porch this year which are her favorite. Happy Holidays to all at Light Keeper Pro!”

Thursday, December 10, 2015
“Just a quick note to tell you how much I appreciate your Light Keeper PRO design and product. For two years I’ve been fighting every Christmas with our pre-lit artificial tree. It’s an older tree, so of course the lights are a problem, and it used to take at least half a day to try and get the lights lit. I almost bought your product last year, but I’m stubborn, and was not going to let a little electrical problem beat me. Well as you know, low volt/current DC circuits are a real pain to trouble shoot and repair. This year, I gave up and bought your tool at Home Depot. I read the instructions carefully (very well written, I used to be a technical writer), and watched the video. Used the quick fix “shunt” method to get part of the repair done, but had to use the audible voltage detector method. It took me an hour or so to find all the bad bulbs (ten), and repair and replace the bad bulbs,in all sections of the tree, that were not lit.

I know I should probably replace the old tree, but my wife still enjoys the one we have, so with your tool I can hang on to it for a little while longer.”

Sunday, December 06, 2015
“Thank you for a great product!  I thought I’d have to throw away my favorite pre-lit wreath when it wouldn’t light up this year.  Our local Ace Hardware guy recommended your tool.  I was skeptical but bought it anyway.  It took some effort but the wreath is fully lit again!  And I especially appreciate the spare bulbs you included.  We recently moved to a small town and a late Sunday run to the nearest store to buy more is not as feasible as it was in the big city.  So just writing to say….we are happy customers. Thank you and Merry Christmas!”

Sunday, December 06, 2015
“Just purchased LightkeeperPro at local Target. Planned for use with Xmas Truckers Parade entry, big doin’s in these parts. But first…Lovely wife of 48 yrs advises the centerpiece lights on our well appointed dining table are 50% (darn, flip-flaggan rabble snap,  filth-n-flarn, etc). Up jumps the lad with my LKP, fresh from the video tutorial, instruction card in hand.

Two basket packages, each with 50 light strings bedded in excelsior. I wanted to call an audible, so went directly to the second method. Immediately located a plug that had heated and melted, so no pulling the bulb. Snip, #18 wire crimp connect, PRESTO! Gotta love you guys and gals for developing and marketing one excellent product.

Enjoy a great 2015 Holiday. Ours’ promises to be that much better thanks to Ultalit.”

Thursday, December 03, 2015
“I just wanted to quick write you and thank you for making this product.

It’s worth it’s weight in gold! I’ve had it for 3 or 4 years now and it has saved me a LOT of time! I just went outside to fix another bulb and felt the need to write to you.

The quick fix trigger helped me quickly identify my 58 bad bulbs on my string of industrial icicle lights this year and the audible voltage tester narrowed down which was the bad bulb in one of my lit candy canes. I used to work in electronics so I understand how your product works. Brilliant idea, guys! I use all of the features too!”

Tuesday, December 01, 2015
“I am an attorney and am not a person that usually writes to rave about a product.  Your LightkeeperPro works to perfection.  This is a great product (and I have seen many products that are far from great).  If you need an endorsement, mark one from me.

We had been wrestling with a light set on a very expensive christmas tree for two nights, when my wife discovered your website.  Today we bought a Lightkeeper Pro from Lowes.  Best 10 minutes I have spent.  Within 30 minutes of us getting home at the end of the day, our light issue was fixed..thanks to Lightkeeper Pro.  Oh, by the way, 25 of those minutes were spent watching the how to video…only 5 minutes to repair and replace 2 burned out bulbs and voila the whole tree is now lit.”

Tuesday, December 01, 2015
“I just want to let you know how impressed I am with the Light Keeper Pro. We have a large pre lit Christmas tree and this tool saved me hours of work getting all of the lights working after storage. Thanks for a product that actually works.”

Monday, November 30, 2015
“Just purchased and used your tool. Love it, it worked great. Wish I had one years ago. Thank you!”

Friday, November 27, 2015
“I am so pissed, last year I threw out dozens of mini-light strands that didn’t work – WHY DIDN’T I FIND OUT ABOUT YOUR PRODUCT SOONER?!

This item is the best thing since sliced bread, truly it’s amazing how this thing works. I’ve never written a review or contacted a corporation in my life but I just had to give you guys a pat on the back. GOOD JOB! I shouldn’t say this but I would of paid double if I knew how well this product performs.

All I can say is thank you, thank you, thank you.”

Monday, November 23, 2015
“I purchased one of your units for incandescent light sets and am very impressed.  Previously, I was using a detector that had to be held against the unlit bulb to determine if it was defective.  It was not that accurate but was better than unplugging and plugging in a lamp to find the bad one.  I had 5 – 100 light sets which had half of the set working and the other half out.  I was not going to test 250 bulbs!

I did an Internet search and found your product.  I purchased one and repaired all of the non-functioning light sets in about 20 minutes!  The “Quick Fix” method was all I needed to use.

Thanks for a product that lives up to its claims!”

Tuesday, November 10, 2015
“I’ll admit I’m a doubting Thomas, gadgets that promise one thing and never deliver litter my past.  Quick fixes, just this easy, one little step, the promises are endless, so don’t hate me when I tell you I thought I was headed for another let down.  Much to my amazement was I wrong this time and thankfully I was.  Your Light Keeper PRO saved my wives favorite Christmas tree from the dumpster and my marriage from a divorce attorney.  It worked as described and without it I would have been out hundreds of dollars.  So if you haven’t been told lately just what a great product this is, well consider it done, thank you and the creature for a gadget that delivers what it promises.”

A letter from our Electrical Engineer

As the Chief Engineer for ULTA-LIT Technologies, I feel qualified to discuss the technology and ease of use of the LIGHTKEEPER PRO.

Twenty years ago, there was no way to check/test/fix/repair series light strings as used in Christmas light strings.  Shortly after I joined ULTA-LIT, we were granted a U.S. Patent on a device known as the LIGHTKEEPER.  It described the technology behind the newly available design.  It described a unique and easy to use application of a piezo-electric device such as used in pocket cigarette lighters, fireplace lighters, and bug zappers to activate the shunt built into almost all incandescent series light sets.  In addition, a voltage sensing circuit was included to find broken or loose bulbs or a broken wire in the failed light set.  Also, more features were designed into the product.  These include an easy to use bulb puller and tester and storage space for spare bulbs and fuse storage.

This multitude of search phrases are used each and every year: Fix Lights, Light Saver, Light keeper, Pro Keeper, Light Tester, Lightkeeper, Fixing lights, Light Testers, Fix Christmas Lights,  Light Keeper Pro (our actual name, yea!), Christmas lights fix, How to repair Christmas lights, bulb tester, Christmas light testers, How to test Christmas lights, and Christmas lights tester, How to check Christmas lights, Fixing Christmas Lights, Christmas tree lights repair, How to fix a strand of Christmas lights, How to fix Christmas lights when half are out, How to fix broken Christmas lights, How to fix prelit Christmas tree lights, How to fix fairy lights, Light fixer pro, Light keeper pro bulb tester and repair tool, light on Christmas tree not working, light tester seen on TV, red gun lights, red gun magic, shunt repair, pre-lit tree repair, Holiday light set repair, broken Christmas lights, series light sets, zap a light set back to life, throw away Christmas lights, blackened light bulbs, UL listed light sets, failed light sets, and dead light sets.

In conclusion, I’m extremely proud of the LIGHTKEEPER PRO that we perfected in 2004 and its companion device, the LEDKeeper (to diagnose and help repair LED light strings) was introduced in 2012.  We are proud of the instructions which come with every unit (as packaging) and support the customer with a Hot-Line during the Holiday Season staffed by knowledgeable technicians to assist consumers.