AHT21 Integrated temperature and humidity sensor -40 ~ + 120 ℃

₹107.21 (Including tax)

Supply voltage: DC : 2.2 – 5.5V
Measuring range (humidity): 0 ~ 100% RH
Measuring range (temperature): -40 ~ + 120 ℃
Humidity accuracy: ± 2 % RH ( 25 ℃ )
Excellent long-term stability
SMD package is suitable for reflow soldering

Discount per Bulk Quantity

Quantity	Discount	Price
5 - 10	5%	₹101.85 (Including tax)
11 - 20	8%	₹98.62 (Including tax)
21 - 40	10%	₹96.49 (Including tax)
41 - 100	12%	₹94.35 (Including tax)

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SKU: rz24317149 Category: Temperature & Humidity Sensor

Description

As a new generation of temperature and humidity sensors, AHT21 sets a new standard in terms of size and performance: a two-row flat pinless SMD package suitable for real flow soldering, bottom face 3x3mm, height 0.8mm. The sensor outputs calibrated digital signals in standard IIC format.

AHT21 is equipped with a newly designed ASIC dedicated chip, an improved MEMS semiconductor capacitive humidity sensor element and a standard on-chip temperature sensor element. Its performance has been greatly improved or even exceeded the reliability level of the previous generation of sensors. A generation of temperature and humidity sensors have been improved to make their performance more stable in harsh environments.

Each sensor is calibrated and tested, and the product lot number is printed on the surface of the product. Due to improvements and miniaturization of the sensor, it is more cost-effective, and ultimately all devices will benefit from cutting-edge energy-saving operation modes.

Features:

Fully calibrated
Digital output, I²C interface
Excellent long-term stability
SMD package is suitable for reflow soldering
Quick response and strong anti-interference ability

Package Includes:

1 x Temperature and Humidity Sensor Model AHT21

Additional information

Input Voltage Range(VDC)	2.2 – 5.5V
Measuring range (humidity)	0 ~ 100% RH
Measuring range (temperature)	-40 ~ + 120 ℃
Humidity accuracy	± 2 % RH ( 25 ℃ )
Temperature accuracy	± 0.3 ℃
Resolution temperature	0.01℃ Humidity: 0.024%RH
Signal Output	I2C signal

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Shipping & Delivery

Shipping and Delivery Policy

1. Shipping Process:

Orders are processed within 1-2 business days after payment confirmation.
Delivery time varies based on location and selected shipping method, typically ranging between 3-7 business days.
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Claims for lost or damaged items must be reported within 48 hours of delivery.

6. No Return Policy for Opened/Soldered Products:

We do not accept returns for products that have been opened, used, or soldered.
Ensure you verify product compatibility before purchase, as returns will only be accepted for unopened and unused items in their original packaging.

7. Refund Policy:

Refunds will be issued only for canceled orders before shipment or wrong/damaged items received (subject to investigation).
No refunds or replacements for products that have been tampered with, soldered, or physically damaged by the customer.

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Product Type	Advanced Humidity/temp Sensor
Sensor Output	Digital
Max Supply Voltage (V)	5V
Sensor Terminals	Through Hole
Response Time	7s
Operating Temperature (°C)	-40 – 125℃
Sensing Accuracy	2%
Humidity Range	0% to 100% Relative Humidity
Capacitance	0.1µF

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Typical accuracy (% RH)	± 2
Operating range (% RH)	0 to 99.9
Humi response time(s)	5
Attenuation(% RH/year)	＜1
Typical accuracy (°C)	0.3
Operating range (°C)	-20~60
Temp response time(s)	5
Attenuation (°C/year)	＜0.1
Interface Type	0~1V/0~5V/0~10V