This manual describes the Aosong AM2120 digital humidity and temperature sensor, covering its specifications, single-wire communication protocol, and…
The Aosong AM2120 is a digital composite sensor that measures both relative humidity and temperature. It features a calibrated digital signal output, eliminating the need for secondary calculations or temperature compensation by the user. The sensor utilizes a dedicated acquisition technology to ensure high reliability and long-term stability. This manual is written in Chinese.
| Relative Humidity Range | 0 to 99.9%RH |
|---|---|
| Relative Humidity Accuracy | ±3 %RH at 25°C |
| Temperature Range | -40 to 80°C |
| Supply Voltage | 3.3V to 5.5V |
| Communication Interface | Single-wire (One-Wire) |
| Signal Transmission Distance | Up to 20 meters |
The response time to reach 63% of the first-order response is less than 5 seconds.
The sensor requires a supply voltage between 3.3V and 5.5V.
The minimum interval between readings is 2 seconds to ensure accurate data and successful communication.