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# AM2301B - Wired Enclosed AHT20 - Temperature and Humidity Sensor

**Type:** Product page · **SKU:** ADA5181 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/am2301b-wired-enclosed-aht20-temperature-and-humidity-sensor.html ([markdown](https://core-electronics.com.au/am2301b-wired-enclosed-aht20-temperature-and-humidity-sensor.html.md))

The AM2301B is a nice but inexpensive temperature and humidity sensor from the same folks that brought us the AM2302.In fact, this enclosed sensor looks...

## Pricing

- **Price:** $16.20 (inc GST) — $14.73 AUD, exc GST
- **Quantity discounts:** 10+ $14.28 (exc GST) · 50+ $13.99 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 33 more in 8–12 days.

## How to buy

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## Description

The AM2301B is a nice but inexpensive temperature and humidity sensor [from the same folks that brought Adafruit the AM2302](https://core-electronics.com.au/am2302-wired-dht22-temperature-humidity-sensor.html).

In fact, this enclosed sensor looks an *awful lot* like the popular DHT22/AM2302 temperature and humidity sensors, but unlike classic DHT sensors, it has an I²C interface! That's right, you do not need to use a bit-bang timing-specific protocol to talk to the AM2301B, it uses plain-old-I²C. And, you can power it with anything from 2.5V to 5.5V so it's good with 3V or 5V microcontrollers. Whew, that makes things a little easier, doesn't it?

[Inside is the AHT20](https://core-electronics.com.au/adafruit-aht20-temperature-humidity-sensor-breakout-board-stemma-qt-qwiic.html). You can take sensor readings as often as you like, and it uses standard I2C so its super easy to use with any Arduino or Linux/Raspberry Pi board.

This sensor has a typical accuracy of ±2% relative humidity, and ±0.3 °C at 20-80% RH and 20-60 °C. There is only one I2C address so it's not a good option when you need multiple humidity sensors.

That said, for maker and IoT projects? You can't beat the simplicity and price! And Adafruit have got ready-to-go working Arduino and CircuitPython code to use it. **[Check out Adafruit's detailed guide for library code, datasheet, and more](https://learn.adafruit.com/adafruit-aht20)**

Each order comes with one AM2301B non-waterproof / wired shell module sensor with built-in pullups. You just provide any microcontroller that can run Adafruit's Arduino or CircuitPython library.

## Technical Details 

- I2C address 0x38 (cannot be changed)
- 2.5V to 5.5V power and logic level
- Pin order: Red Power, Black Ground, Yellow SDA, White SCL
- Built in 4.7K I2C pullup resistors.
- Usage Humidity: 0... 100%RH
- Usage Temperature: -40ºC – 80ºC
- Typical accuracy of ±2% relative humidity, and ±0.3 °C at 20-80% RH and 20-60 °C
- Overall accuracy of ±3% relative humidity, and ±0.5 °C
- 24AWG cables

Product Dimensions: 58.8mm x 26.8mm x 13.2mm / 2.3" x 1.1" x 0.5"

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/5181_AM2301B_1138213284a.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_872.jpg)