Table 3.

DHT22.

Power supply	3.3 – 5 VDC
Output signal	1-wire bus digital signal
Operating range (humidity)	0 – 100 % RH
Operating range (temperature)	−40 ∼ 80 ◦C
Accuracy (temperature)	±0.5 ◦C
Accuracy (humidity)	±2 −5 % RH
Protocol	Modbus/RTU