Features: Smart Temperature Controller with adjustable -20°C to 120°C ranging ensures optimal growth conditions for greenhouse plant through precise heating/cooling modes. Equipped with ±1°C accuracy monitoring and flashing alarm systems to instantly alert users about temperature deviations beyond preset thresholds. Designed for agricultural professional, greenhouse operators, and horticulture enthusiasts managing temperature sensitive crops or flowers. Optimizes plant development in greenhouses, nurseries, and hydroponic setups by maintaining consistent climate conditions day and night. Double mode functionality automatically activates connection heating/cooling devices based on real time temperature data, streamlining cultivation workflows. Specifications: Color: White Component: Plastic Size: 10.1x5.3cm Temperature setting ranging: -20℃~120℃ Accuracy: ±1℃ Package Includes: 1pcs Temperature Controller note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.