The Exo Terra Thermostat Dimming and Pulse Proportional Thermostat Reptile Terrarium Controller is a digital terrarium thermostat for precise temperature control up to 300 or 600 Watt options. It uses dimming and pulse-proportional technology to maintain stable temperatures between ~64–100°F (18–38°C) with high accuracy. The thermostat features an LED heating indicator and a recessed anti-tamper dial, plus a waterproof remote sensor for safety. It’s ideal for regulating heat mats, ceramic heaters, or bulbs, preventing dangerous temperature swings in your reptile’s habitat. Available in Multiple Wattage options