ASAIR AHT21B Temperature and humidity sensor Temperature: -40~+80°C; Humidity: 0~100%RH


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SKU: 1151996


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Brand: ASAIR
Category: Temperature & Humidity Sensor
Tags: temperature and humidity sensor, ASAIR Sensor

AHT21B Temperature and humidity sensor Temperature: -40~+80°C; Humidity: 0~100%RH is equipped with a newly designed ASIC dedicated chip, an improved MEMS semiconductor capacitive humidity sensor component and a standard on-chip temperature sensor component. Its performance has been greatly improved and even beyond the reliability level of the previous generation of the sensor, which makes it more stable in harsh conditions. Each sensor had been rigorously calibrated and tested. Due to the improvement and miniaturization of the sensors, it is more cost-effective.


  1. Relative humidity and temperature output
  2. Superior sensor performance, typical accuracy RH: ±3%, T: ±0.5℃
  3. Fully calibrated and processed digital output, I²C protocol
  4. Wide voltage support 2.2 to 5.5V DC
  5. Excellent long-term stability
  6. Fast-response and anti-interference capability
  7. Output signal I²C signal
  8. Packaging blister tray

Package Includes:

1 x ASAIR AHT21B Temperature and humidity sensor Temperature: -40~+80°C; Humidity: 0~100%RH

Operating Voltage

2.2 – 5.5V

Scope of Work Temperature

-40~+80°C; Humidity: 0~100%RH

Accuracy Temperature

±0.5℃; Humidity: ±3%RH(25℃)

Hysteresis Temperature

±0.1℃ Humidity:±1%RH

Resolution Temperature

0.01℃ Humidity: 0.024%RH

Shipping Weight 0.001 kg
Shipping Dimensions 7 × 6 × 1 cm
3 Months Warranty

This item is covered with a standard supplier warranty of 3 months from the time of delivery against manufacturing defects only. This is a quality product & only manufacturing defects are covered under this warranty. Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China

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