I used this to turn a refrigerator into a freezer. Easily could be used for heat trace, and attic fan, or any other temperature driven automation. WAAAYYYY overbuilt, which is exactly what you want.
Christo
NJ
3 months ago
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I will buy it again if needed
I like the display is so easy to read
jv
Denver Co
1 years ago
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Good unit
Easy to use
Rigs
Pa
2 years ago
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Temperature control
Product works great and easy to use
Slick
Plaistow NH
2 years ago
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I would buy this again.
Use as an aqua stat on an indirect. Works great
Bucky Brandow
Standish me.
3 years ago
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I use this type alot, and will continue.
Easy to set up, tie in with 24v
I use them to sense outside temperature for staging in back up and ascent heat!
Also back light is nice!
Mick
Pa
4 years ago
Verified Buyer
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Quality Product
Using tthis to control a dump valve solenoid for a UV sanitizer to keep it from overheating on extended periods of no water usage.
Performs flawlessly, highly recommended
Edsgarage
North Carolina
4 years ago
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Simple setup, accurately reading and reliable.
.
Yosef
NYC
5 years ago
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Great temperature controller
I needed an accurate low temperature controller to keep my garage from freezing. It's not easy finding an accurate thermostat that controls down to 33F. The remote probe permits me to measure the temperature at the door and not close to the heater.
Bill R.
Cleveland OH
7 years ago
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Excellent Performance and EASY to use
This A-421 model is a definite improvement above the older A-419. MUCH easier to program and use. I find these units accurate, stable and incredibly user friendly.
Andy
VT
7 years ago
Verified Buyer
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