Key benefits — why you need this controller Reliable automatic switching between cooling and heating modes prevents temperature overshoot and reduces manual intervention. Precise temperature control with adjustable setpoint and differential ensures stable conditions for sensitive equipment or products. Built-in calibration and alarm functions maintain accuracy and provide immediate notification of sensor faults or out-of-range conditions. Compressor/output delay protection reduces wear and risk of short cycling, extending equipment life and avoiding costly repairs. Core functions and how they solve problems Auto mode switching (cool ↔ heat): Automatically changes control action based on measured temperature relative to the setpoint, eliminating the need to switch modes manually and maintaining target conditions. Setpoint and difference value control: Define the desired temperature and the allowable hysteresis (difference) to tailor responsiveness and avoid unnecessary switching. Temperature calibration: Compensate for sensor offsets to ensure displayed and controlled temperatures match actual conditions. Refrigerating control output delay protection: Prevents immediate reactivation of refrigeration outputs after shutdown, protecting compressors from short cycles. Alarm for limit exceedance and sensor error: Triggers alerts when temperature passes preset limits or when the sensor malfunctions, enabling quick corrective action. Performance and compatibility Accurate, repeatable temperature regulation through user-adjustable setpoint and differential values. Designed to interface with standard temperature sensors and common cooling/heating control outputs; suitable for integration with many refrigeration and HVAC control circuits. Durable construction and compact footprint (standard controller form factor) for easy panel or enclosure mounting and straightforward installation. Protective delay logic and alarm handling improve system reliability and minimize downtime. Typical applications (practical scenarios) Commercial refrigeration: Maintain consistent temperatures in display cases, cold rooms, or transport refrigeration while protecting compressors from short cycling. HVAC and environmental control: Automatic switching keeps server rooms, offices, or lab spaces within a tight temperature band with reliable fail-safe alarms. Small-scale incubators, greenhouses, or process enclosures: Precise setpoint/differential control and calibration ensure stable growing or processing environments and alert operators to sensor or temperature faults. What to expect during use Simple configuration of setpoint and difference values for fast tuning to your application. Accurate readings that can be calibrated to match a reference thermometer. Built-in safety behavior: delayed compressor output after shutdown and alarms for out-of-range temperature or sensor errors to protect product, equipment, and process. Functions summary Automatic cool/heat mode switching Adjustable temperature setpoint and differential Temperature calibration capability Refrigeration control output delay protection Alarm for temperature limit exceedance and sensor error This controller provides dependable, easy-to-configure temperature regulation with protective features designed to keep cooling and heating equipment operating safely and accurately.