AHT25 Humidity and Temperature Module

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2 Features and Specifications of AHT25 Sensor

5 Applications of Temperature and Humidity Sensor

AHT25 is a quick-response, calibrated, reliable temperature and humidity sensor, which permits the measurement of environmental parameters such as humidity and temperature. This temperature sensor is easy to interface with any microcontroller to get the weather reading of the environment.

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Hardware Overview

They equipped the AHT25 temperature and humidity sensor with a designed ASIC dedicated chip, a semiconductor capacitive humidity sensor, and a temperature sensor element, The enhanced temperature, and humidity sensor provides more stable performance in tough environments and can maintain
Good accuracy in a wider measurement range.

Features and Specifications of AHT25 Sensor

Features

Fully calibrated
Digital output, I²C interface
Excellent long-term stability
Quick response and strong anti-interference ability

Specifications

Power supply: DC2.0V-5.5V
Temperature Measuring range: – 40 ~ + 80 ℃
Humidity Measurement Range: 0~100%RH
Humidity accuracy: ±2%RH @25℃
Temperature accuracy: ±0.3℃
Temperature Resolution: 0.01℃
Humidity Resolution: 0.024%RH
Output signal: I2C signal

Pinouts of AHT25

Pin number	Pin Name	Description
1	Vdd	The power supply pin requires voltage from 2.2V to 5.5V
2	SDA	Serial Data Bidirectional port
3	GND	Connection of the sensor to the system’s ground
4	SCL	Serial clock Bidirectional port

Interfacing with Microcontroller

Connect the 5V Pin of the microcontroller to the board Vdd pin
Then, connect the GND of the sensor to the microcontroller board GND
Connect the microcontroller’s SCL pin to the board SCL
Connect the microcontroller’s SDA to the board SDA pin

Applications of Temperature and Humidity Sensor

IoT Environmental Monitoring

An environmental monitoring process is a system that monitors or controls the quality of the environment. One can also develop an IoT temperature monitoring system using a temperature sensor. Hence, this system also employs humidity and temperature sensors like AHT25.

Climate Control

Climate control is a system for regulating the temperature. Therefore, the AHT25 temperature and humidity sensor may help to get the environmental readings to work accordingly. For example, the microcontroller gets the temperature and humidity sensor from the sensor, If the temperature exceeds an upper or lower threshold, the system would act accordingly.