Description
Introducing the BS AHT21 High Precision Digital Temperature and Humidity Sensor Measurement Module – the ideal upgrade for anyone looking to replace the older SHT20 sensor in Arduino projects. Engineered with state‑of‑the‑art I²C communication, this compact module delivers fast, reliable, and ultra‑accurate environmental readings for hobbyists, engineers, and IoT developers.
Why Choose the BS AHT21?
- 🔧 Plug‑and‑Play Compatibility – Directly fits Arduino, ESP32, Raspberry Pi, and other 3.3 V/5 V micro‑controller boards.
- 📈 High Precision – Temperature accuracy ±0.3 °C (0 °C ~ +85 °C) and humidity accuracy ±2 % RH (20 % ~ 80 % RH).
- ⚡ Low Power Consumption – Ideal for battery‑operated and remote sensing applications.
- 🚀 Fast I²C Interface – Up to 400 kHz data rate for real‑time monitoring.
- 🛡️ Robust Build – Moisture‑resistant package with a 2‑wire I²C connector for reliable long‑term operation.
Key Highlights
- Digital output via standard I²C bus (address 0x38)
- Operating voltage: 3.3 V – 5 V
- Temperature range: –40 °C to +125 °C
- Humidity range: 0 % – 100 % RH
- Compact footprint: 12 mm × 12 mm × 4 mm
- Easy firmware integration with Arduino libraries (Adafruit AHT20, SparkFun, etc.)
Seamless Compatibility
The BS AHT21 is a direct replacement for the SHT20 sensor, making it perfect for existing designs that require a more accurate and power‑efficient solution. It works flawlessly with:
- Arduino Uno, Mega, Nano, and MKR series
- ESP8266 / ESP32
- Raspberry Pi (via I²C GPIO pins)
- STM32, Teensy, and other ARM‑based boards
Benefits for Your Projects
- Accurate Climate Control – Ideal for HVAC, greenhouse automation, and weather stations.
- IoT Ready – Reliable data for cloud‑based monitoring and analytics.
- Energy Efficient – Extends battery life in portable and remote sensor nodes.
- Developer Friendly – Extensive sample code and library support reduces time‑to‑market.
Technical Specifications
- Sensor Type: Capacitive humidity & thermistor temperature
- Resolution: 0.01 % RH / 0.01 °C
- Response Time: < 2 seconds (typical)
- Operating Current: 0.5 mA (standby) – 1.5 mA (measurement)
- Operating Temperature: –40 °C to +125 °C
- Operating Humidity: 0 % – 100 % RH
- Package: SMD, 4‑pin I²C header
Get Started Today
Upgrade to the BS AHT21 High Precision Digital Temperature and Humidity Sensor Measurement Module and experience the next level of environmental sensing. Order now and enjoy fast shipping, detailed datasheets, and dedicated technical support.
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