Saves a lot of fuses.

Save time running to get fuses

Works great in helping me troubleshoot. Good to keep on the truck. Got both the 5 and 3 amp in the kit for the same price as one. Really good value

I usually carry one of the smaller circuit breaker Transformers but it overheats quickly and has to cool down for quite some time between trips. These do not seem to have as much of a problem with that and you have the three and five amp version. Huge Time Saver for low voltage diagnostics.

I saw another review asking about the UL rating, but it's right there in the product details and they came with the UL sticker on them, so I'm happy. I've bought tools from this brand before and they're always a really good value. These are sturdier than ones I've used in the past and they come with the leads already made up so you can just plug it right into the board. Cost was about what I would have paid for just the 3A tester, so I basically got the 5A one for free, it's a great deal. I definitely like buying HVAC Guys stuff.

Easy to use and quality product. This company knows their stuff and I would highly recommend to all. They also have a helpful support team if needed.

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As I'm searching for low voltage issues this handy tool kept me from going through fuses costing me money. I highly recommend this tool.

I read the other review that says it is not UL rated. I was concerned about that, but after research I’m not sure what they are talking about??? UL info is provided in the listing. I confirmed on UL’s website as well. Great value! Best I have seen. This combo has you fully covered as you get both the 3A and 5A tester for the same price of others only offering 1.

I am very pleased with this product. I was glad to see it had both 3 and 5 amps