Incandescent Christmas Light Tester

Commercial Grade

$145.01 ea
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Incandescent Christmas Light Tester

Commercial Grade

The Magic Box commercial grade Christmas light tester isolates twisted bulbs, empty sockets, and bad fuses by forcing electrical current through a non-working set. You can start repairing your defective incandescent lights instead of trashing them. It makes 'dollars and sense' to easily repair a set as opposed to throwing it away. Essential for lighting professionals and crews, this little box will pay for itself in no time.

NOTE: To reduce possibility of electrical shock when using this machine, avoid holding the string of lights in your hands while testing. Extension cords sold separately.

Christmas Trees

Brochures & Spec Sheets


Stock Code:HLS-TEST100
Part No.:TEST-100
Amperage:5 Amps
Length:8.5 in.
Height:37.5 in.
Use With:Incandescent Mini Lights
Cord Length:5 ft.
Width:6.75 in.
UL Listed:Yes
Case Quantity:6



Test-100 Incandescent Light Tester Instructions

This Light Tester is designed to work with incandescent mini light sets only. The light tester will only work with one string of lights at a time. When working with trees you must remove any tape and disconnect the clusters of plugs, in order to isolate the individual sets.

  1. Plug the light tester into a standard 120-volt outlet and flip up the on/off power switch.
  2. Plug the light set into the outlet located on the front of tester.
  3. Push in and release the large red button. One of 4 things should happen:
    1. Lights should kick back on. Then find and replace burnt out bulbs.
    2. A "buzz" is heard in light string. This indicates a missing or broken bulb. Press big button as needed to track down buzz sound. Replace bad bulb, lights should come on
    3. The box itself buzzes. This indicates multiple problems on string, see probe instructions below.
    4. One half of the string is lit. Pull one of the lit bulbs out of socket, press and release big button. This should kick on bad half of string.
  4. Probe Instructions: If the box buzzes you have multiple issues on this string. The probe will tell you if you have power to a particular socket. Plug probe into front of tester, remove first bulb on string. Place probe into socket making contact with one side of socket at a time, if there is power to that socket a light will shine from behind plug on front of box. Continue to probe string at every 5th bulb or so. You should be able to isolate the problems this way. Be sure to check the bulbs you pull out to be sure they have two good wires.

NOTE: To reduce possibility of electrical shock when using this machine, avoid holding the string of lights in your hands while testing.

Customer Reviews

Rated 5 out of 5 by 4 reviewers.
Rated 5 out of 5 by item received and put it to work immediaqtly and in a half hour repaired seven strands of lights. Works great received the item on time as stated and in good condition. Put it to work and immediately found that it worked as stated. Well worth the money in the time saved. March 13, 2015
Rated 5 out of 5 by how have i lived without this by far the best light fixer on the market, takes 10 seconds or less to fix 99% of light strings that are inop December 11, 2013
Rated 5 out of 5 by Commercial Grade Christmas Light Tester We have a professional holiday lighting division in our landscape company. We have used units like this in the past, and found this one here to be a better value than our wholesale distributor offers. Works great. Sturdy housing will take some abuse. Great value. December 10, 2012
Rated 5 out of 5 by Easy and saves time I had a few strings that had bad bulbs in them until I used this tester and I found the problem fast. November 11, 2011
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