Description
The Tarangify AHT20 Temperature & Humidity Sensor PCB is a compact digital environmental sensor designed for temperature and relative humidity measurement.
The AHT20 provides a typical temperature accuracy of ±0.3°C and typical humidity accuracy of ±2% RH, making it a practical and cost-effective option for general environmental monitoring and IoT applications.
The sensor communicates using the I²C interface and operates from 2.2V to 5.5V.
Single I²C Address
The AHT20 uses a fixed I²C address of 0x38. Because there is only one available I²C address, the AHT20 is not ideal when multiple AHT20 humidity sensors need to be connected directly to the same I²C bus.
For applications requiring multiple sensors on the same I²C bus, an I²C multiplexer or sensors with configurable addresses may be required.
Technical Specifications
| Specification | Details |
|---|---|
| Sensor | AHT20 |
| Temperature Accuracy | ±0.3°C typical |
| Humidity Accuracy | ±2% RH typical |
| Temperature Range | -40°C to +85°C |
| Humidity Range | 0–100% RH |
| Operating Voltage | 2.2–5.5V |
| Interface | I²C |
| I²C Address | 0x38 |
| PCB Type | Rigid PCB |
| PCB Size | 23.875 × 6.000 mm |
| Pad-to-Pad Distance | 3.176 mm |
Single I²C Address
The AHT20 has a fixed I²C address of 0x38. Therefore, multiple AHT20 sensors cannot be directly connected using different addresses on the same I²C bus. An I²C multiplexer may be required for multiple sensors.
Applications
- IoT environmental monitoring
- HVAC monitoring
- Weather stations
- Smart agriculture
- Greenhouse monitoring
- Data logging
- Smart home
- Industrial monitoring
- Embedded systems
Compatible Platforms
ESP32 · Arduino · Raspberry Pi · STM32 · ESP8266 · RAK Wireless · Other I²C-compatible MCUs
What’s Included
- 1 × Tarangify AHT20 Temperature & Humidity Sensor PCB
Not included: Cable, probe, metal housing, filter, enclosure, connector, or mounting hardware.
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