If you need a controller that can maintain the temperature of a system to a fraction of a degree, forget this one. Keep in mind that the device doesn't use pid. It's a relay output hence, you get an ON or OFF condition. This is perfect for my project: Monitor the inside temperature of my soundproof box ... Read more
It works just as advertised. It can be set to heat or cool. There is an option for delayed switching and an adjustable hysteresis. It's pretty accurate (better than I can measure at least). If needed, you can calibrate it through the menu, but mine was within 1 degree out of the box. The display is very ... Read more
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