SEN-18364

Data Sheet DHT20 Humidity and Temperature Module • Relative humidity and temperature output • Superior sensor performance, typical accuracy RH: ±3%, T: ±0.5℃ • Fully calibrated and processed digital output, I²C protocol • Wide voltage support 2.2 to 5.5V DC • Excellent long-term stability • Fast-response and anti-interference capability Product Summary DHT20 is a new upgraded product of DHT11, equipped with a dedicated ASIC sensor chip, a high-performance semiconductor silicon-based capacitive humidity sensor and a standard onchip temperature sensor, and uses a standard I 2 C data output signal format. Its performance has been greatly improved and has exceeded the reliability level of the previous generation sensor(DHT11).The new generation of upgraded products have been improved to make their performance more stable in high temperature and high humidity environments; at the same time, the accuracy, response time, and measurement range of the product have been greatly improved. Each sensor is rigorously calibrated and tested before leaving the factory to ensure and satisfy customer’s large-scale applications. 1 Product Description The DHT20 is a kind of sensor of humidity and temperature with digital I²C output. It can be applied to HVAC, dehumidifier, testing and inspection equipment, consumer products, automobiles, automatic control, data loggers, weather stations, home appliances, humidity control, medical and other application fields which need to detect and control temperature and humidity. Figure 1. DHT20 www.aosong.com Version:V1.0 —— May 2021 1 / 13 DHT20 Data Sheet 2 Sensor Specifications Relative Humidity Parameter Condition Min Typical Value Max Unit Resolution Typical - 0.024 - %RH Accuracy Typical - ±3 - %RH Tolerance1 Max - %RH See Figure 2 Repeatable - - ±0.1 - %RH Hysteresis - - ±1 - %RH Nonlinear - -