4.54.5 out of 5 stars
72 product ratings

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64 reviews

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Thermoelectric Cooler

I am using the W1209 to regulate the 12 volt power from a storage battery into a thermoelectric cooler that otherwise would just keep the current on after the element has gotten as cool as it will get.Read full review

Verified purchase:  Yes • Condition: new • Sold by: envistia

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Cannot calibrate it.

This Calibration requires both offset and magnification. Meaning, if we set the offset to show 0 degrees correctly (ICE Water mix temperature), by adjusting P4 on programming, then we cannot achieve 100C for boiling water temperature. It shows 97C. The reason is that the magnification factor is not available to set.Read full review

Verified purchase:  Yes • Condition: new • Sold by: envistia

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Nice temp controller, Easy to set up and very accurate as well. A+ 5 Stars!

I have this controller on a mountain top two way radio repeater controlling a 280 CFM fan to switch on or off depending on the temp of the TX and it has behaved wonderfully for around 7 months now. Recommended and a great value as well...Read full review

Verified purchase:  Yes • Condition: new • Sold by: envistia

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This little thermostat works great!

This thermostat is very easy to use and it is small. I am using it to turn on and off a 40 amp relay for a homemade refrigerator that I am making. So far it has been very reliable.

Verified purchase:  Yes • Condition: new • Sold by: envistia

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Great little thermostat!

Well designed, works perfectly, really inexpensive, easy to use, and it's small, what's not to love?

Verified purchase:  Yes • Condition: new • Sold by: envistia

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Nice

Very well designed. Made with high quality components. Provides a full range of parameters. I will be buying additional units.

Verified purchase:  Yes • Condition: new • Sold by: envistia

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Great little thermostat

Pack a lot of setting options into a compact package. Highly recommended! Will be getting a couple more to control heaters. We run solar to power much of this and to tap into 12v to control temps is a easy application.Read full review

Verified purchase:  Yes • Condition: new • Sold by: envistia

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Great Thermostat Relay

I bought two different ones and this one only draws 25% of the milliamps of the other one. Very easy to adjust setpoint. Sensor responds extremely quickly to temperature changes.

Verified purchase:  Yes • Condition: new • Sold by: envistia

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Good value

Good form factor, could use a case as an option,terminal connections a little fussy.
Will see how durable it is over time.

Verified purchase:  Yes • Condition: new • Sold by: envistia

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Nicely Priced economical temp controller.

Fast shipping and Exactly as expected...
As Expected for Chinese mass produced items. Some screws are too short, some too long, but it goes together and works as it should.

Verified purchase:  Yes • Condition: new • Sold by: knownuttn

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