DHT11 output calibrated digital signal. It applys exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability. 

Power supply: 3.3-5.5V DC

Output signal: digital signal via 1-wire bus

Accuracy: humidity +-5%RH, temperature +-2Celsius

Resolution or sensitivity: humidity 1%RH, temperature 1Celsius

Operating range: humidity 20-90%RH, temperature 0~50Celsius

Sensing element: Polymer humidity resistor

Humidity hysteresis: +-1%RH

Repeatability: humidity +-2%RH, temperature +-1Celsius

Interchangeability: fully interchangeable

Long-term Stability: +-1%RH/year