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Seeed Studio Grove AHT20 I2C Industrial Temperature Humidity Sensor
Industrial-grade sensor measures temperature from -40 to 85 °C and humidity 0 to 100 % RH with ±0.3 °C and ±2 % RH accuracy over I²C
- Product typeSensors
- Industrial-grade reliability from -40 °C to 85 °C operating range
- Precise humidity readings with ±2 % RH accuracy at 25 °C
- Fast I²C integration via Grove interface at address 0x38
- Compact 24 × 20 × 12 mm SMD package suits reflow soldering
- Arduino-ready with tutorials and Wiki resources for quick prototyping
Industrial I2C Sensor
The Seeed Studio Grove AHT20 is a factory-calibrated temperature and humidity sensor built for industrial environments. It communicates over a Grove I2C interface at 0x38 and operates from 2.0 to 5.5 V DC. The board measures 24x20x12 mm and includes a Grove cable for quick connection to compatible hosts.
Suits harsh-environment logging.
Engineers monitoring climate in cabinets, greenhouses or process lines will benefit from the -40 to 85 °C range and 0 to 100 % RH span with ±2 % RH and ±0.3 °C accuracy. Buyers who need certified traceability, condensation-rated housings or sub-degree humidity resolution should look at specialised metrology probes instead.
±0.3 °C accuracy drives fit
The on-chip temperature sensor delivers ±0.3 °C accuracy at 25 °C with 0.01 °C resolution, while the MEMS capacitive element provides 0.024 % RH resolution. If your control loop demands tighter temperature tolerance than ±0.3 °C, this module will not meet the requirement.
How it compares
Measured against everything we stock in Sensors, Transducers & Thermometers, at today’s prices. Recalculated every night.
- Price $17.99
- Cheaper than about 80% of the 255 comparable items (median $39.99).
Specifications
| Product | |
|---|---|
| Product type | Sensors |
Questions about this item
How can I verify the sensor is reading correctly after wiring it?
Check that the I²C bus detects address 0x38 and that the first readings fall within -40 ~ 85 °C and 0 ~ 100 % RH with the stated ±0.3 °C and ±2 % RH accuracy.
What ships in the box and what must I source separately?
The package includes one Grove AHT20 sensor board and one Grove cable; you will need a compatible host board and any mounting hardware.
Which version should I pick for an industrial environment?
This single AHT20 variant covers the full -40 ~ 85 °C and 0 ~ 100 % RH range with ±0.3 °C temperature accuracy, making it the appropriate choice for industrial use.
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