Introduction
The AHT20 is a high-precision but low-cost temperature and humidity sensor, which is equipped with an improved MEMS semiconductor capacitive humidity sensor element. It features standard I2C interface and a wide voltage supply of 2V - 5V. And with the simple peripheral circuit, it performs stably even in harsh environments in the measuring range of -40~＋85℃.
This sensor can be widely used for measuring the environmental temperature and humidity of home electronic equipment, the temperature and humidity of automobiles, and so on.
Features
- Digital output, I2C interface
- Excellent long-term stability
- Quick response and strong anti-interference ability
Specification
Module Parameters
- Operating Voltage: DC2V~5V
- Output Signal: I2C
- I2C Address: 0×38
- Dimension: 30mm×20.5mm/1.18×0.81"
AHT20 Chip Parameters
Relative Humidity
- Resolution: 0.024 %RH
- Accuracy Error: ±2% RH
- Repeatability: ±0.1 %RH
- Hysteresis: ±1 %RH
- Non-linear: ±0.1 %RH
- Response Time: 8S
- Operating Range: 0~100 %RH
- Long-term Drift: ＜0.5 %RH/yr
Temperature
- Resolution: 0.01℃
- Accuracy Error: ±0.3℃
- Repeatability: ±0.1℃
- Hysteresis: ±0.1℃
- Response Time: minimum 5S, maximum 30S
- Operating Range: -40℃~85℃
- Long-term Drift: ＜0.04℃/yr