The SI7022-A20-IM1 with Board Mount Humidity Sensors Digital RH + temp sensor with PWM output is a humidity and temperature sensor manufactured by Silicon Labs. It is a digital, rh + temperature sensor with a pulse-width modulation (PWM) output, which provides accurate and reliable sensing of relative humidity and temperature. The board-mountable sensor supports a wide operating range and can measure temperatures from -40°C to +125°C and humidity from 0% to 100%. The sensor provides digital I²C communication with on-chip calibration data for advanced accuracy and reliability across the full operating measurement range. It is suitable for a wide range of applications, such as in industrial and HVAC systems, medical instrument analyses, home and personal care devices, food packaging and monitoring, and many more.