Looking for Aht21b Sensor? AHT21B Temperature and Humidity Sensor Temperature is available at Zbotic with fast shipping across India.
Description:
AHT21B Temperature and Humidity Sensor Temperature
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 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.
Features:
Relative humidity and temperature output
Superior sensor performance, typical accuracy RH: ±3%, T: ±0.5℃
Fully calibrated and processed digital output, I²C protocol
AHT21B Temperature and Humidity Sensor Temperature Overview
The AHT21B Temperature and Humidity Sensor Temperature module is a compact digital sensor that measures ambient temperature and relative humidity. It integrates a MEMS capacitive humidity element and an on-chip temperature sensor driven by a dedicated ASIC, offering factory-calibrated digital output over I²C for reliable environmental monitoring.
Key Features of AHT21B Temperature and Humidity Sensor Temperature
Temperature range –40 °C to +80 °C and humidity range 0–100 %RH
Fully calibrated, processed digital output via I²C protocol
Wide operating voltage from 2.2 V to 5.5 V DC for 3.3 V/5 V systems
New ASIC and MEMS capacitive sensor design for improved stability
Compact, cost-effective module suitable for harsh environments
Genuine AHT21B sensor modules with fast shipping across India from Zbotic
Applications and Use Cases
Greenhouse climate control and plant health monitoring
HVAC system performance tracking in residential and commercial buildings
Portable weather stations and outdoor environment logging
Data loggers for cold chain and storage monitoring
Smart home devices for automated ventilation and dehumidification
Industrial process monitoring where temperature and humidity stability are critical
How to Use AHT21B Temperature and Humidity Sensor Temperature
To use the AHT21B, connect VCC to a 2.2–5.5 V supply and GND to ground, then wire SDA and SCL to your microcontroller’s I²C bus with pull-up resistors. After powering on, send the init command to wake the sensor, trigger a measurement, wait the specified conversion time, and read back the calibrated humidity and temperature bytes over I²C.
Why Buy from Zbotic?
Genuine Products: All items sourced from authorized distributors
Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
Free Shipping: Free delivery on qualifying orders
COD Available: Cash on Delivery, UPI, cards, net banking
Technical Support: Expert help for setup and troubleshooting
Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
What supply voltage is required for the AHT21B sensor?
The AHT21B operates on 2.2–5.5 V DC, making it compatible with both 3.3 V and 5 V microcontroller platforms when using proper pull-up resistors on SDA/SCL lines.
Does the AHT21B require external calibration?
No, each AHT21B unit is factory calibrated. It delivers fully processed digital humidity and temperature readings without the need for user calibration routines.
How do I interface the AHT21B with a microcontroller?
Connect the sensor’s SDA and SCL pins to your microcontroller’s I²C bus, power it at 2.2–5.5 V, send the start-measurement command per the AHT21B protocol, wait for conversion, then read the humidity and temperature bytes from the data registers.
The AHT21B Temperature and Humidity Sensor Temperature is a versatile temperature & humidity sensor used across a wide range of applications including weather stations, greenhouse monitoring, HVAC systems, cold chain logistics, and server room monitoring.
Common use cases:
Building a home weather station with Arduino
Monitoring greenhouse conditions via IoT
Alerting when server room temperature exceeds threshold
This product is ideal for IoT developers, agricultural engineers, and home automation enthusiasts.
Technical Tip: DHT22 offers better accuracy than DHT11. For precision applications, use SHT31 or BME280. Ensure adequate ventilation around the sensor.
Shipping & Delivery
Free shipping on orders above ₹999 across India
Dispatched within 1-3 business days
Expected delivery: 3-7 business days depending on location
Secure packaging to ensure safe transit of electronic components
Weight
0.0 kg
15 Days Warranty
Please note that this item is only covered by a standard supplier warranty against manufacturing defects for a period of 15days from the time of delivery. It is important to understand that only manufacturing defects are covered under this warranty, and any other issues will not be considered for reimbursement or replacement. We strongly advise inspecting the product upon delivery to ensure it meets your expectations. In case of any manufacturing defects, we guarantee reimbursement or replacement.
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.
Kapil Tiwari (verified owner) –
Very satisfied with this AHT21B Temperature and Humidity Sensor Temperature. Library support is good and it’s easy to interface.
Ishan Mittal (verified owner) –
Perfect for my weather station. This AHT21B Temperature and Humidity Sensor Temperature gives consistent readings day and night.
Nikita Kapoor (verified owner) –
Nice AHT21B Temperature and Humidity Sensor Temperature. Readings are mostly accurate. Good enough for my hobby project.
Aditi Batra (verified owner) –
Great AHT21B Temperature and Humidity Sensor Temperature. Using it in my smart agriculture system. Reliable measurements every time.
Gauri Sharma (verified owner) –
Love this AHT21B Temperature and Humidity Sensor Temperature. Response time is fast and readings are stable.
Manoj Patil (verified owner) –
This AHT21B Temperature and Humidity Sensor Temperature is a must-have for sensor projects. Plug and play with Arduino.
Naveen Bose –
This AHT21B Temperature and Humidity Sensor Temperature works great with Arduino. Easy to wire up and code.
Parth Batra (verified owner) –
Perfect AHT21B Temperature and Humidity Sensor Temperature for my automation project. Integrates seamlessly with my microcontroller.
Eshan Khurana (verified owner) –
This AHT21B Temperature and Humidity Sensor Temperature is a must-have for sensor projects. Plug and play with Arduino.
Nikhil Verma (verified owner) –
Average AHT21B Temperature and Humidity Sensor Temperature. Readings fluctuate a bit. Works for rough measurements.
Harshit Thakur (verified owner) –
Decent AHT21B Temperature and Humidity Sensor Temperature for the price. Requires proper wiring but works well once set up.
Urmi Patil (verified owner) –
Great quality AHT21B Temperature and Humidity Sensor Temperature. Calibrated it easily and the accuracy is impressive.
Kritika Pillai –
This AHT21B Temperature and Humidity Sensor Temperature works great with Arduino. Easy to wire up and code.
Daksh Bajaj (verified owner) –
Good quality AHT21B Temperature and Humidity Sensor Temperature. Some variation in readings but within acceptable range.
Chetan Dhillon (verified owner) –
Excellent sensitivity and range on this AHT21B Temperature and Humidity Sensor Temperature. Works better than I expected.
Aanya Jain –
Average AHT21B Temperature and Humidity Sensor Temperature. Readings fluctuate a bit. Works for rough measurements.
Meera Patil (verified owner) –
Love this AHT21B Temperature and Humidity Sensor Temperature. Response time is fast and readings are stable.