Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Communication Interface	IIC (2-Wire)
Operating Voltage	3.3V - 5.5V DC
Temperature Range	-40°C to +80°C
Humidity Range	0% to 100% RH
Temperature Accuracy	±0.5°C
Humidity Accuracy	±2% RH
Response Time	< 2 Seconds
Package Type	SMD Module with Pins
Anti-Interference	High Immunity Design
Application Scope	HVAC, IoT, Weather Stations

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Excellent for university projects

Documentation was easy to find online, and the library support for Arduino is excellent. Highly recommend for students.

Anonymous

Mar 23, 2026

Rating: 4/5

Good accuracy, easy to integrate

Works great with my ESP32. The anti-interference claim seems valid as I haven't seen any spikes in data. Just remember to pull up the lines correctly.

Anonymous

Mar 12, 2026

Rating: 5/5

Much better than DHT11

Upgraded from a DHT11 and the difference in response time and precision is night and day. The digital signal is very clean.

Anonymous

Mar 09, 2026

Rating: 5/5

Perfect for my weather station project

The IIC interface made wiring incredibly simple compared to the single-wire DHT models. Readings are stable and consistent even near my router.

Anonymous

Mar 04, 2026

Rating: 4/5

Great for monitoring plants

Using three of these in my automated greenhouse. They handle the high humidity environment well without drifting. One star off because the pins were slightly bent on arrival.

Anonymous

Mar 04, 2026

Rating: 5/5

Reliable and robust

I've tested this against a calibrated industrial meter and it's surprisingly close. The build quality of the module is solid.

5 FAQ

Q: Can this sensor be used outdoors directly in the rain?

A: No, while the sensor element is robust, the PCB and connections are not waterproof. You must house it in a breathable, weatherproof enclosure for outdoor use.

Q: Is this compatible with 5V Arduino boards?

A: Yes, the AM2301B operates within a 3.3V to 5.5V range, making it fully compatible with standard 5V Arduino boards like the Uno.

Q: What is the maximum cable length recommended for the IIC connection?

A: For reliable IIC communication, we recommend keeping the cable length under 1 meter. For longer distances, consider using an IIC extender or buffer.

Q: How often can I read data from this sensor?

A: The sensor has a sampling rate limit. We recommend reading data no more than once every 2 seconds to ensure accurate measurements and prevent bus locking.

Q: Does this module come with pull-up resistors installed?

A: Most versions of this module include onboard pull-up resistors for the SDA and SCL lines, but please check the specific schematic provided in the datasheet for your batch.

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