Enhance your sourdough game with our optional borosilicate glass dome (sold separately)! It allows for precise temperature control, keeping your starter in the perfect “Goldilocks Zone” of 75-82°F (24-28°C) — where it’s most active and healthy. No more heating up your whole house; just bake perfect bread all year round! Precision is key! Our device offers degree-by-degree temperature settings from 70-100°F, with a built-in sensor for real-time monitoring. The auto-warming on/off switch and 12-hour timer function allow you to easily adapt to changes in ambient temperature and jar thickness, ensuring optimal results every time. Pre-calibrated for accuracy, our heater ensures your sourdough starter stays close to the desired temperature. While there may be a slight 3-5 degree variance due to ambient conditions, you can easily adjust the settings to compensate. The intuitive two-zone thermometer (with green and red lights) keeps you informed about the warmer’s status at a glance. With just 10W of power, it’s a safe, low-energy solution that doesn't compromise on performance. A true game changer for home bakers! Quickly heat and activate your sourdough starter, or use the glass dome to transform it into a cozy mini “Warm House” — perfect for keeping your yeast active and thriving all winter long!