🌡️ Programmable DC 12V Electronic Temperature Controller -50 to 110°C Thermostat Control Switch Module with NTC Waterproof Sensor Probe and Dual Color LED Display Monitor (2 Pieces) Review

First of all the last digit keeps blinking (more than less by a fraction of a degree) Annoying! Poorly! Third, the instructions are difficult to understand (poor use of English). Fourth, if you set a high/low alarm, it will NEVER stop (until you rip the power cords!). It was nice to get two, but it wasn't! PASS THIS!

I use this controller to turn the hour meter on and off based on my boiler flue temperature. The sensor is glued to the chimney with foil. The hour meter turns on when the chimney is hot and off when the chimney cools down. The result is a boiler runtime monitor that keeps track of total hours of operation throughout the winter. Yes, I could connect the hour meter directly to the boiler thermostat and do without that controller, but there were reasons for that. make it more complicated. In any…

The day after I wrote my review below the product stopped working. I checked the wiring and the power supply, but everything was fine. I took the second one and plugged it in but it still didn't work. Eventually I replaced the thermostat with a toggle switch and the fan came on. These items do not appear to be stable so I have downgraded my rating to 2 stars. First review - I installed this to control a 12v fan in my attic. That works great. It illuminates when the temperature is 2°F above the…

I had high hopes for these devices, they were exactly what I needed. I am an experienced electronics engineer, I connected them exactly according to the instructions. works but failed a few minutes after hooking it up to my dyno. Blank display, no operation. So I replaced it with a second unit, which worked great on my dyno for a day, but once installed in the chassis it should be. failed like others. Blank display, no operation. My experience seems to be common among those who leave reviews…

I had high hopes for these devices, they turned out to be just what I needed. I am an experienced electronics engineer, I connected them exactly according to the instructions. The first unit appeared to work, but failed within minutes of being connected to my dyno. Blank display, no work. So I replaced it with a second unit that worked great on my dyno for a day, but once installed in the chassis it didn't work like others have. Blank display, no action. My experience seems to be common among…

After about an hour of fiddling I figured out the direction. You need to understand Chinguish to understand the direction. aProgramming is an exercise in patience. But it's cool when you do something. This is for backup. I suggest hooking it up to a battery with more wires so you can play around with it before hooking it up more permanently. The Set button and the C/F buttons work together differently. The alarm works fine. I intend to only use it to take temperature and not run any air…

I bought this to control a 12v heat source to keep a small boat engine bay from freezing. The temperature here is never very cold, so I don't need much energy. Out of the box, my device was set to control the cooler, not the heater. That is, the relay closed when the temperature exceeded the set one. The device I received did not come with any instructions. I found instructions for a similar controller in another Revain review (DZS Elec -50 to 110 degrees Celsius (-58 to 230 F) temperature…