DHT22 AM2302 IIC I2C single-bus digital temperature and humidity sensor module - with PCB

Product Description:     

AM2302 Humidity Capacitance Digital Temperature and Humidity Sensor is a temperature and humidity composite sensor with a calibrated digital signal output. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure high reliability and excellent long-term stability. Therefore, the product has the advantages of excellent quality, fast response, strong anti-interference ability, and high-cost performance. Each sensor is calibrated in a precision humidity calibration chamber.
The calibration coefficients are stored in the OTP memory as a program, and these calibration coefficients are called internally during the processing of the detection signal. The sensor consists of a capacitive sensing element and an NTC temperature measuring element connected to a high-performance 8-bit microcontroller.
Communication with the microprocessor via a single bus requires only one line, 40 bits of data at a time, high first out. Small size, low power consumption, long communication distance, can be used in demanding applications

Applications:

HVAC, dehumidifiers, testing, and inspection equipment, consumer goods, automotive, automation, data loggers, weather stations, home appliances, humidity control, medical, and other relevant humidity measurement and control.

Specification:

• Temperature measurement range: -40 ° C ~ 80 ° C ; Humidity measurement range: 0% to 99.9% (0°C-50°C range)

• Temperature measurement error: ±0.5°C max ±1°C; Humidity measurement error: ±2%

• Working voltage: 3V--5.5V

• Resolution: 16 bits

• Sampling period: 2s; Output signal digital signal via single-bus; Sensing element Polymer capacitor