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Exo Terra ON/OFF Thermostat (100 Watt)


4.3 out of 5 stars


Quantity Available: 45

About This Product

  • Accurately controls terrarium temperatures
  • Ideal for use with Heat Mats and Heat Cables
  • From 20°C up to 35°C (68°F – 95°F)
  • Waterproof remote sensor
  • Controls heating devices up to 100 W/ 300 W
  1. Recessed temperature setting to avoid accidental setting or tampering
  2. Waterproof remote sensor with 6 foot / 185cm probe cord
  3. Red LED heat indicator shows when heating element is ON
  4. Can be used with the following Exo Terra heating sources: Heat Mat - Heat Cable - Ceramic Heater

Reptiles are ectotherm, and use heat from an external source to thermoregulate their optimal body temperature. Most reptiles use direct radiant heat from the sun in combination with conductive heat from sun-heated surfaces such as branches, rocks or other heat accumulating structures. Providing such an appropriate, species related, temperature gradient in the terrarium is an important factor in successful reptile keeping.

With the Exo Terra 100 W Electronic ON/OFF Thermostat you can create a well controlled heating system that allows you to maintain the required temperature conditions similar to those found in a desert or tropical environment. The Thermostat will also help to prevent overheating and undercooling during hot summer days or cold winter nights. The electronic Triac switch keeps the temperature at the desired setpoint with a much higher accuracy compared to conventional thermostats and virtually eliminates temperature swings in the terrarium.

Simply connect your Heat Mat, Heat Cable or Ceramic Heater to the Exo Terra ON/OFF Thermostat, set the preferred temperature and place the heat sensor in the desired spot. The Red LED heat indicator will light up when the heating device is ON and will shut off once the desired temperature has been reached. The recessed dial of the thermostat will prevent accidental temperature change if the device is being handled. The waterproof remote sensor can be safely used in highly moist terrariums and aquatic environments.

The Exo Terra Thermostat should be set according to the needs of the animals. Thoroughly research the preferred optimum temperature range (POTR) for your specific reptile, so you can create the correct temperature gradients inside the terrarium to allow your reptiles to thermoregulate.


This product ships to your doorstep. Most orders placed before 2pm ET on business days will ship out the same day.

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Customer Reviews

4.3 out of 5 stars

Based on 4 reviews

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4.0 out of 5 stars

Thermostat works great

Keeps my snake nice and warm and has held up well with time, the probe is smaller and easier to hide than others I've used. Very well made.


5.0 out of 5 stars


Great value!


4.0 out of 5 stars

very needed

a nessisary part to maintaing a vivarium this one however can not be programamed in any way shape or form so tempatures cannot be programed


4.0 out of 5 stars

Great cheap thermostat.

I use this in conjunction with a ceramic heat emitter, and it works well. As with most cheap thermostats the temperature is within 2 degrees or so, but that’s pretty good. The two negatives I have are that the wires are so thick that the temp sensor doesn’t fit well through the holes on an exoterra terrarium. The other negative is the light, it is incredibly bright and on the front. I have to cover it with something so I can sleep.

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