Descriptions: DHT21 AM2301 Digital Temperature & Humidity Temperature Sensor

The Am2301 dht21 Digital Temperature and Humidity Sensor is a combined temperature and humidity sensor with a calibrated digital signal output.We use dedicated digital module acquisition technology and temperature and humidity detection technology to ensure high reliability and excellent long-term stability.The sensor consists of a capacitive humidity sensing element and an ntk temperature measuring element and is connected to a high performance 8-bit single chip microcomputer.Therefore, the product has excellent quality, ultra-fast response, anti-interference function, cost-effectiveness and so on.Each am2301 / dht21 sensor is calibrated in a highly accurate humidity check room.The calibration factors are stored programmatically in otp memory and these calibration factors are recalled by the sensor during the processing of the detected signal.The single-line serial interface makes system integration easy and fast.Ultra-low volume, very low power consumption and signal transmission distances of over 20 meters make it ideal for all kinds of applications and the most demanding applications.

Specifications:

• Model: AM2301
• 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 size 59*27*13.5mm

• High precision
• Capacitive type
• Full range temperature compensated
• Relative humidity and temperature measurement
• Calibrated digital signal
• Outstanding long-term stability
• Extra components not needed
• Long transmission distance
• Low power consumption
• 4 pins packaged and fully interchangeable
• Measuring range: temperature -40-80 ℃; humidity 0; 99.9%RH
• Measurement accuracy (25℃): temperature: + 0.5; humidity: + 2%RH (10; 90%RH)
• Resolution: temperature: 0.1 ℃, humidity: 0.1%RH
• Attenuation value: temperature: <1℃ / year; humidity: < 1%RH/ years
• Sensor type: temperature: resistance type sensor; humidity: capacitive sensor
• Response time: temperature: 5S; humidity: 5S 1/e (63%)
• Work within the scope: -40-80℃
• Power source: DC3.3-5.5V
• Shell material: PC plastic
• Weight:1g
• Color: White