Digital temperature and humidity sensor
Attention: DHT21 has been renamed AM2301
1. Measurement of relative humidity and temperature
2. All calibration, digital output
3. Excellent long-term stability
4. No additional components required
5. Ultra long signal transmission distance
6. Ultra low energy consumption
7.4 pin installation
8. Complete Interchange
AM2301/DHT21 Product Overview
The AM2301/DHT21 digital temperature and humidity sensor is a temperature and humidity composite sensor that contains calibrated digital signal outputs. It applies dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure that the product has extremely high reliability and excellent long-term stability. The sensor includes a capacitive humidity sensing and an NTC temperature measuring and is connected to a high-performance 8-bit microcontroller. Therefore, this product has the advantages of excellent quality, ultra fast response, strong anti-interference ability, and extremely high cost-effectiveness. Each AM2301/DHT21 sensor is calibrated in an extremely accurate humidity calibration room. The calibration coefficients are stored in the OTP memory in the form of a program, and the sensors need to call these calibration coefficients during the signal processing process. Single line serial interface makes system integration simple and fast. Its ultra small size, extremely low power consumption, and signal transmission distance of over 20 meters make it the best choice for various applications and even the most demanding applications. The product is packaged with 4-pin single row pins. Convenient connection, special packaging forms can be provided according to user needs.
application area
HVAC testing and testing equipment
Car data recorder
Automatic control of consumer goods
Meteorological station appliances
Humidity regulator medical
Dehumidifier
