Product Description:
YJJ DHT21 Digital Temperature and Humidity Sensor Is Used in Air
Purifiers
Features:
DHT21 sensor is commonly used in graduation projects to measure the
temperature and humidity data of the environment. The DHT11 sensor
has a wide measurement range, capable of measuring relative
humidity from 20% to 90% and temperature from 0°C to 50°C. Its
humidity measurement accuracy is ±5% RH, temperature measurement
accuracy is ±2°C, and the resolution is 1. This makes the DHT11
suitable for many application scenarios.
Main specification parameters of the DHT21 ( AM2301 ) digital
temperature and humidity sensor are as follows:
Measurement range
Humidity: 0 - 99.9% RH
Temperature: -40℃ ~ +80℃
Accuracy and Resolution
Humidity: ±3% RH
Temperature: ±0.5℃
Resolution: Humidity 0.1% RH, Temperature 0.1℃
Power Supply and Communication
Voltage: 3.3V to 5.5V (typical operating voltage 3.3V)
Power consumption: Approximately 500 μA (supply current)
Interface: Single bus interface (requires only one data line)
Storage conditions
Recommended storage temperature range: 10℃ to 50℃, humidity 20% to
60% RH. This is to prevent component performance from drifting.
Typical application
Suitable for scenarios such as air purifiers, humidifiers,
dehumidifiers, environmental monitoring equipment, etc.
Specifications:
| Humidity | 0 - 99.9% RH |
| Temperature | -40℃ ~ +80℃ |
| Humidity | ±3% RH |
| Temperature | ±0.5℃ |
