DIGITAL DISPLAY: The digital display provides accurate temperature readings, making it easy to monitor and switch between cooling and heating modes. Control temperature by setting the temperature set value and differential value. Features temperature calibration, refrigerating control output delay protection, and alarm functions for temperature exceedance, temperature limits, or sensor errors. VERSATILE USAGE: This thermometer hygrometer is suitable for household environments, ideal for use in homes or offices. FEATURES: High-quality construction; compact and lightweight design; large, clear LCD display Automatically switches between cooling and heating modes to maintain optimal temperature range; includes two relays; supports Celsius display Wide temperature range: -50C to 99C; dual heating and cooling functionality Refrigerating control output with delay protection; includes compressor delay protection Temperature control via set point and differential settings TECHNICAL PARAMETERS: 1. Temperature measuring range: -50C ~ 99C 2. Resolution: 0.1C 3. Accuracy: 1C (-50C ~ 70C) 4. Sensor error detection delay: 1 minute 5. Power supply: 110220VAC 50/60Hz, 12VDC, 24VDC (selectable at order) 6. Power consumption: