The Habistat Day and Night Dimming Thermostat is a well trusted thermostat which is used for controlling incandescent lightbulbs and other heating devices from 40 watts upto 600 watts each to ensure they do not heat your vivarium above the safe limits for your reptile. The Day and Night Dimming Thermostat has the ability to connect to the Habistat Night Eye (not included) to drop the temperature at night.The dimming thermostat is good for anything which emits light as it will not turn off the light once the temperature is reached, keeping a full daytime period for your reptile instead of multiple mini sun sets and sun rises!The dial has combined Fahrenheit and Celsius guides for ease of use. Thermostats are important as even in a well set up tank the temperature can fluctuate, for example if sunlight reaches the tank or the house becomes warmer. Habistat products are manufactured in the EU and are very high quality and reliable. Habistat Temperatures Thermostats have 5 year warranties for extra piece of mind.Suitable for: Heating Devices between 40 and 600W Smaller (lower wattage) basking lights (larger ones will not emit as much heat as they will run at lower level) Any Enclosure Any Species Use with Habistat Night Eye (not included)