DIGITAL DISPLAY: The digital display provides accurate temperature readings, making it easy to monitor and switch between cool and heat modes. Set the temperature value and differential value. Features include 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 and office environments. Features: - High quality construction - Compact and lightweight design - Large, clear LCD display - Automatically switches between cooling and heating modes to maintain optimal temperature conditions - Dual relay output - Supports Celsius temperature display - Wide temperature range: -50°C to 99°C - Dual heating and cooling functionality - Compressor delay protection for refrigerating control Technical Parameters: - Temperature measuring range: -50°C to 99°C - Resolution: 0.1°C - Accuracy: ±1°C (-50°C to 70°C) - Sensor error detection delay: 1 minute - Power supply: 110–220VAC 50/60Hz, 12VDC, 24VDC (selectable at order) - Power consumption: Low energy usage