The Aosong AM2306 is a digital humidity and temperature sensor module that outputs calibrated digital signals. It combines a capacitive humidity sensing element with a high-precision temperature sensing element connected to an 8-bit microcontroller. The sensor features a standard single-wire interface, low power consumption, and a signal transmission distance of up to 20 meters, making it suitable for various applications including medical and meteorological stations.
The document details the sensor's performance characteristics, including a relative humidity range of 0-99.9% RH with ±2% accuracy and a temperature range of -40 to 125°C with ±0.3°C accuracy. It also explains the single-wire communication protocol, pin definitions, and provides examples for calculating humidity and temperature values from the received data stream. This manual is written in Chinese.
| Relative Humidity Range | 0-99.9 %RH |
|---|---|
| Relative Humidity Accuracy | ±2 %RH |
| Temperature Range | -40 to 125 °C |
| Supply Voltage | 3.3V - 5.5V |
| Signal Transmission Distance | 20 meters |
The recommended supply voltage is 5V, although the operating range is 3.3V to 5.5V.
The minimum interval between readings should be greater than 2 seconds to ensure accurate data.
The resolution of the relative humidity sensor is 0.1 %RH.