| 1 | 2 | 3 | 4 |
|---|---|---|---|
| VDD | SDA | GND | SCL |
2.2-5.5v, no pull-up resistors on the module
Official Datasheet (CN): AHT25_Chineses_datasheet.pdf
Official Datasheet (EN): AHT25_English _datasheet_A0.pdf
Price: ~2.5$ (12/5)
Site: https://www.aosong.com/en/products-61.html
See some test results:
Test 3 v10a high to low humidity
Test 5 v10b NaCl solution draft