Temperature & Humidity Sensor DHT 21 Digital Output

Temperature & Humidity Sensor DHT 21 Digital Output

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DHT21 Capacitive Digital Temperature & Humidity Sensor sensor is one of the commonest from the range of DHT temperature sensors and boasts a relatively high-temperature measurement accuracy of 0.5oC in 0.1oC steps with a relative humidity accuracy of +/- 3%. It has only 3 wires, including power and ground, meaning only one digital pin is required to interface it to a microcontroller. For Arduino development platforms the sensor is very well supported by the DHT library available from the Arduino Playground website.

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Temperature & Humidity Sensor DHT 21 Digital Output

Temperature & Humidity Sensor Specifications and Features:
Model: AM2301 /DHT21
Power supply: 3.3-5V DC
Output signal: digital signal via single-bus
Sensing element: Polymer humidity capacitor
Measuring range: humidity 0-100%RH; temperature -40~80Celsius
Accuracy: humidity +-3%RH(Max +-5%RH); temperature <+-1Celsius
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
Sensing period: Average: 2s
Dimensions (LxWxH)mm: 59 x 27 x 13.5

SKU: CE-M0147 Category: Tags: , , , ,

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