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I have used two of these controllers and they have both worked great for my needs. Just be careful not to go over the current limit. I already blew the relay in one of mine. It didn't take much to wire in a new, external relay that could handle more power. I would recommend these controllers and will continue to use them in the future.
Verified purchase: Yes | Condition: New
I WOULD NOT RECOMMEND USING THIS CONTROLLER IN ANYTHING IMPORTANT. My function for this was to turn on a fan when the unit it was monitoring got to 100 degrees "F." The instructions seemed a bit hard to understand, but I was able to get the thing programmed as I wanted. 100F is the lowest temp in the heat mode. The unit worked fine for about 2 months and then I discovered the middle digit, lower segment right segment was out. I also noticed the segment above it was out, but it came back on with a tap. The unit continues to switch the fan on and off, but sometimes it's hard to read the temp. I would have expected this controller to last for a lot longer than 2 months without a flaw. Seems that things from China simply do not last like they should.
Verified purchase: Yes | Condition: New
The key is wiring this device, as the instructions are a little vague on its ability to switch internally, but once you figure it out, it works fine. Don't like exposed wires, but for the price it's great. Would love to better understand what the orange clips on the sides are for?
Verified purchase: Yes | Condition: New
I thought this was an STC-1000. It looks identical, but this has only one relay output instead of two, so you can only set it in heat or cool mode, not both at the same time. I just wish it would have more clearly identified that it only had one relay output and not two. I do have another use for this that it will work well for and I have tested with a light to make sure that it works well. The nice thing is it displays in F and not C for those of us in the US.
Verified purchase: Yes | Condition: New
poor documentation, may because of the translation, but operating instructions are very hard to follow, most of the time I just push buttons until I get desired results. In the end way cheaper than any alternative I have found, and works well.
Verified purchase: Yes | Condition: New