The AM2302 is a wired version of the DHT22, in a large plastic body. It is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data.
FEATURES:
- High precision
- Capacitive type
- Full range temperature compensated
- Relative humidity and temperature measurement
- Calibrated digital signal
- Outstanding long-term stability
- Extra components not needed
- Long transmission distance, up to 100 meters
- Low power consumption
- 4 pins packaged and fully interchangeable
SPECIFICATIONS:
- Model: AM2302
- Power supply: 3.3-5.5V DC
- Output signal: digital signal via 1-wire bus
- Sensing element: Polymer humidity capacitor
- Operating range: humidity 0-100%RH; temperature -40~80Celsius
- Accuracy: humidity +-2%RH(Max +-5%RH); temperature +-0.5Celsius
- Resolution or sensitivity: humidity 0.1%RH; temperature 0.1Celsius
- Repeatability: humidity +-1%RH; temperature +-0.2Celsius
- Humidity hysteresis: +-0.3%RH
- Long-term Stability: +-0.5%RH/year
- Interchangeability: fully interchangeable
