Digital Temperature & Humidity Sensor

This temperature & Humidity sensor is a wired version of the DHT21, 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.

• DHT21 is the former name, new name is AM2301
• 4-pin package
• Ultra-low power
• No additional components
• Excellent long-term stability
• All calibration, digital output
• Completely interchangeable
• Long distance signal transmission
• Relative humidity and temperature measurement

Specifications:

1. Type: AM2301
2. Accuracy resolution: 0.1
3. Measurement range: 0-100%RH
4. Temperature measurement range: -40℃ ~ +80℃
5. Humidity measurement precision: ±3%RH
6. Temperature measurement precision: ±0.5℃
7. Monobus digital output
8. 20cm-cable
9. Dimensions: 2.32 in x 1.02 in x 0.55 in (5.9 cm x 2.6 cm x 1.4 cm)

Connection:

This Sensor has 3 wires, connect these wires to your Arduino/Crowduino Project as following:

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