Digital humidity and temperature sensor-AM2303 AOSONG0 pages

Your specialist in innovating humidity & temperature sensors

Digital relative humidity & temperature sensor AM2303
1. Feature & Application:
*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, up to 100 meters
*Low power consumption
*4 pins packaged and fully interchangeable

2. Description:
AM2303 output calibrated digital signal. It applys exclusive digital-signal-collecting-technique and humidity
sensing technology, assuring its reliability and stability. Its sensing elements is connected with 8-bit single-chip
computer.
Every sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the
calibration-coefficient is saved in type of programme in OTP memory, when the sensor is detecting, it will cite
coefficient from memory.
Small size & low consumption & long transmission distance(100m) enable AM2303 to be suited in all kinds of
harsh application occasions. Single-row packaged with four pins, making the connection very convenient.
3. Technical Specification:
Model
Power supply
Output signal
Sensing element
Operating range
Accuracy
Resolution or sensitivity
Repeatability
Humidity hysteresis
Long-term Stability
Interchangeability

AM2303
3.3-5.5V DC
digital signal via Aosong 1-wire bus
Polymer humidity capacitor
humidity 0-100%RH;
humidity +-2%RH(Max +-5%RH);
humidity 0.1%RH;
humidity +-1%RH;
+-0.3%RH
+-0.5%RH/year
fully interchangeable

temperature -40~80Celsius
temperature +-0.3Celsius
temperature 0.1Celsius
temperature +-0.2Celsius

4. Dimensions: (unit----mm)

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http://www.aosong.com
Thomas Liu (Sales Manager)
Email: thomasliu198518@aliyun.com , sales@aosong.com

Aosong Electronics Co., Ltd.