The W3230 Mini Digital Temperature Controller is a compact, reliable thermostat designed to keep heating or cooling systems precisely on target. Whether you are building a home brewing setup, managing a terrarium, controlling a fermentation chamber, or automating a small greenhouse, this controller gives you accurate temperature regulation with a clear digital display and a waterproof sensor probe.
With a wide control range from -55°C to 120°C and 0.1°C resolution, it handles both heating and cooling modes through a built-in relay. The intuitive button interface lets you set your target temperature, adjust the return difference, define upper and lower limits, apply a correction offset, and even add a delayed start to protect your equipment. It is a practical, low-cost solution for anyone who needs dependable temperature automation.
Ideal for home brewing, fermentation cabinets, reptile terrariums, aquariums, seedling heat mats, incubators, and DIY temperature automation projects. The panel-mount format makes it easy to install into a control box or appliance panel, and the waterproof sensor can be placed directly into water or soil.