Retail: $36.89
Price: $29.95
Availability: In Stock - Usually ships in 1 to 2 days.



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SureSTAT TS110 thermostats have a watertight enclosure making them an excellent option for wet environments. The single stage thermostat can be used to automatically control ventilation fans or heaters. This thermostat was developed with the harsh greenhouse environment in mind. Temperature coil is stainless steel to prevent corrosion. SPDT switch. Wiring required.


  • Wide temperature range: 30° to 110° F
  • Fixed 3 degree temperature differential
  • Can be used with millivolt, 12, 24 and 120 volt appliances
  • Can handle 15 full load amps @120V
  • Can be wired for heating or cooling
  • Waterproof NEMA 4X enclosure

Thermostat placement in a greenhouse: To get the desired temperature, thermostats should be located at plant height near the center of the greenhouse where they are not influenced by drafts or the temperature of an exterior wall. It is best if both heating and cooling thermostats are located together and protected from direct contact with sunlight and water. One simple way to accomplish this would be to mount the thermostat(s) to a piece of wood (or other nonconductive material) with a top on it like in the picture to the left. Wood should be painted white to shade it from the sun.

What is a Differential? The difference between on and off setpoints on a control. For temperature, it is the difference in degrees between the thermostat's on and off setting. If you set a heating thermostat with a 3 degree differential to 71°, it will supply power at any temperature below 71° and cut off at 74° (3 degrees above the setpoint). A cooling thermostat would cut on above 71° and off at 68°.

Product Manuals, Tips, Specs, & Guides

SureStat Instruction Manual
Changing the SureStat Operating Mode & Checking for Correct Operation

Overall Customer Rating of 7 Reviews:

Best thermostat for greenhouses

I just installed my second of these thermostats a month ago. I have one hooked up to run my 110v fan and auto louver opener motor, and the second as a millivolt thermostat for my natural gas heater. This thing is built solid, easy to install, waterproof with the conduit connection, and very simple to wire.



I bought the sure stat plug-in version for my fan in a greenhouse and I loved it so I figured I'd give this a try works great doesn't turn my furnace on as much as I was with my old one it's a wonderful device.

Great thermostat for a great price

Works and installs as intended


Great product

We love how our greenhouse came out great product

12 volt thermostat

This thermostat works great. I installed this to control the solar powered exhaust fan in my greenhouse.
The included installation instructions were clear and easy to follow.
Great product,I would buy it again.