The DHT22 Temperature-Humidity Sensor with Sensor Modules ROHS manufactured by Waveshare is designed to measure both temperature and humidity. It features a humidity sensing range of 0-100% RH, a temperature sensing range of -40 to 80°C, and a resolution of 0.1°C for temperature and 0.1% RH for humidity. The device also has a built-in heating element, enabling a minimum temperature of -40°C. The module can be easily connected to an Arduino, Raspberry Pi, or other microcontroller using a digital signal with no additional components necessary. The module also features a low power consumption, making it a great choice for battery-operated applications.