The DHT21 digital temperature 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...

• 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:
  • Type: AM2301
  • Accuracy resolution: 0.1
  • Measurement range: 0-100%RH
  • Temperature measurement range: -40℃ ~ +80℃
  • Humidity measurement precision: ±3%RH
  • Temperature measurement precision: ±0.5℃

• Datasheet at wiki

Your order will be dispatched within 3-5 working days. Most deliveries require someone to accept and sign for the delivery to ensure the goods are received correctly. To help you we can arrange for delivery to be made elsewhere. Click here for more information.

We hope you like your purchase, however, if you are not entirely satisfied with any item, it can be sent back to us for a refund, provided it is returned within 14 days after delivery has been made (unless otherwise specified). Please click here for more information.