> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # DHT20 - AHT20 Pin Module - I2C Temperature and Humidity Sensor **Type:** Product page · **SKU:** ADA5183 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/dht20-aht20-pin-module-i2c-temperature-and-humidity-sensor.html ([markdown](https://core-electronics.com.au/dht20-aht20-pin-module-i2c-temperature-and-humidity-sensor.html.md)) The DHT20 is a nice but inexpensive temperature and humidity sensor from the same folks that brought us the DHT22.This little sensor looks an awful... ## Pricing - **Price:** $7.90 (inc GST) — $7.18 AUD, exc GST - **Quantity discounts:** 10+ $6.96 (exc GST) · 50+ $6.82 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 28 and Sep 01. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA5183:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA5183:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description The DHT20 is a nice but inexpensive temperature and humidity sensor [from the same folks that brought Adafruit the DHT22](https://core-electronics.com.au/dht22-temperature-humidity-sensor-extras.html). This little sensor looks an *awful lot* like the popular DHT11/DHT22 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 DHT20, 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 DHT20 pin 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 from Left to Right: Power, SDA, Ground, 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 - [Datasheet](https://core-electronics.com.au/attachments/localcontent/5193_DHT20_1160062c972.pdf) ![RoHS 2 2011 65 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2011_65_EU_7356c5574c.svg)![RoHS 2 2015 863 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2015_863_EU_86773f57f9.svg) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_877.jpg)