AHT21 temperature and humidity sensor

AHT21 has a newly designed ASIC dedicated chip, an improved semiconductor capacitive humidity sensor, and a standard on-chip temperature sensor element.


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SKU: TS-P1091
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AHT21 Temperature and Humidity sensors are famous for measuring environmental conditions in various applications. They offer high Accuracy and Reliability, making them suitable for industrial and consumer devices. Their digital output interface and compact size easily integrate them into electronic systems.
The AHT20 sensor typically operates over various temperatures and humidity levels, providing precise data for climate monitoring, HVAC systems, weather stations, and more. Its simplicity and effectiveness make it a go-to solution for many sensing needs.


  • Operating Voltage: 2.0 – 5.5V
  • Measuring range (temperature):-40~+120℃
  • 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
  • Size: 16*11 mm


Package includes: 1x AHT21 Temperature and Humidity sensor

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Weight 0.010 kg
Dimensions 6 × 8 × .5 cm

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