DHT22 specifications
- power supply: 3.3V - 6V DC
- output signal: single-bus
- sensing element: polymer humidity capacitor & DS18B20
- measuring range: humidity 0-100% RH / temperature -40 ° C - 125 ° C
- The accuracy is: humidity ± 2% / temperature ± 0.2 ° C
- sensing period: ~ 2s
