Description This digital temperature and humidity controller is ideal for various domestic, institutional, and industrial heating and cooling applications. Features: Be able to connect to refrigeration/heating equipment and a humidifier/dehumidifier at the same time. HEATING AND COOLING MODES: The heating/cooling function can be set separately for refrigeration and heating to protect the temperature controller from violent changes. MULTI-PROTECTION: Temperature calibration checks and adjusts the accuracy by comparing with the standard value, self-protecting cooling system, and automatic overheating alarm. DUAL DISPLAY: Clear and accurate readings, no illegible characters. PRECISION CONTROL: Scientific structure, better performance, anti-failure capacitor ensures protection safe of the electrical circuit. Specifications: Material: ABS (flame retardant) Power supply: 110-220VAC ± 10% 50/60Hz, DC 12V, DC 24V (optional) Temperature measuring range: -20°C ~ +80°C Humidity measuring range: 00%RH ~ +100%RH Accuracy: ±1°C, 0.1%RH Relay output contact capacity: 10A/240VAC Sensor type: Built-in sensor Sensor length: 1 meter (include probe) Item size: 8.6 * 7.5 * 3.5cm / 3.38 * 2.95 * 1.37in Package Size: 10.5 * 8.2 * 5.4cm / 4.13 * 3.34 * 2.12in Item Weight: 126.6g / 4.46oz Package Weight: 150.2g / 5.29oz Package List: 1 * Temperature and Humidity Controller 2 * Probe Sensor