This review delves into the Exo Terra 600-watt dimming and pulse proportional thermostat, focusing on its performance and usability, particularly its unique day/night function. We'll examine the ease of setup and the clarity of the device's design, assessing its intuitive operation and compact size. A key feature explored is the automatic temperature adjustment based on a built-in light sensor, mimicking natural diurnal temperature fluctuations within a reptile enclosure. We'll discuss the effectiveness of this sensor and offer insights into its optimal placement for reliable performance.This detailed examination covers both the strengths and limitations of the Exo Terra 600-watt thermostat. We'll analyze the accuracy of the temperature control, the brightness and readability of the display, and the overall user experience. The review concludes with a balanced assessment, weighing the advantages of automated temperature regulation against any potential drawbacks, ultimately determining its suitability for reptile keepers seeking a user-friendly and effective solution for maintaining ideal terrarium temperatures.
Pros And Cons
- Day and night function
- Standard connections for various heating apparatuses (lights, ceramic heaters, etc.)
- Day/night function relies on a light sensor, requiring strong direct sunlight for reliable switching; may not switch reliably with indirect sunlight or weak light sources.
- Only half of the sensor needs to be exposed to light for the function to work properly.
Read more: Top 10 Reptile & Amphibian Terrarium Thermometers: A Buyer's Guide
Unboxing and Initial Impressions
The Exo Terra 600-watt dimming and pulse proportional thermostat arrived in standard packaging. The unit itself is fairly straightforward in design, with easily accessible connections.

The connection for the heating apparatus (light bulb, ceramic heat emitter, etc.) is clearly labeled and easy to use. Setup seemed intuitive and hassle-free.

Overall first impressions were positive. The compact size is ideal for smaller setups, and the clear labeling makes it user-friendly.
Day/Night Function and Controls
The Exo Terra thermostat features a convenient day/night function, indicated by a sun or moon icon. This automatically adjusts the temperature according to your pre-set values.

The display clearly shows the set temperature (both day and night), the current temperature from the probe, and the power output to the heating element.

The backlight on the display is brighter in 'day' mode, making it easier to read even in well-lit conditions.

Light Sensor and Performance
The day/night function relies on a light sensor located on the probe. This is a clever design that automatically adjusts heating without complex timers.

However, it's crucial that the sensor receives direct, strong sunlight. Indirect or weak light might not trigger the day/night transition reliably.

Ensure that the sensor is properly positioned to receive adequate sunlight for optimal function.
Overall Review and Conclusion
The Exo Terra 600-watt thermostat offers a good balance of features and ease of use. The day/night function is a valuable addition, particularly for maintaining appropriate reptile enclosure temperatures.

While the light sensor is generally effective, it's crucial to ensure it receives enough direct sunlight. This may require some adjustments based on your terrarium setup.

Overall, this thermostat is a solid choice for reptile keepers who appreciate automated temperature control and want a user-friendly experience. It's worth considering despite the need to monitor the light sensor performance.