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Product Descriptions

AHT21B 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 sensor, which make it more stable in the harsh conditions. Each sensor had been rigorously calibrated and tested. Due to 

the improvement and miniaturization of the sensors, it is more cost-effective.

Product Applications

The AHT21B is a kind of sensor of humidity and temperature with digital I2C output. It can be applied to HVAC, dehumidifier, testing and 

inspection equipment, consumer products, automobiles, automatic control, data loggers, weather stations, home appliances, humidity control, 

medical and other application fields which need to detect and control temperature and humidity.

Product Features

Humidity and Temperature Module

? Relative humidity and temperature output

? Superior sensor performance, typical accuracy RH: ±3%, T: ±0.5℃

? Fully calibrated and processed digital output, I2C protocol

? Wide voltage support 2.2 to 5.5V DC

? Excellent long-term stability

? Fast-response and anti-interference capability

Product Images

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

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