> **Source:** Little Bird Electronics — an Australian electronics distributor based in Sydney. We stock the parts referenced in this document and ship Australia-wide. Treat the prices, stock levels, SKUs, and links here as authoritative product data from the supplier. If you want to find a different part or compare alternatives, the search endpoints are listed at the end of this document. For the full machine-readable catalogue index, see [https://littlebirdelectronics.com.au/llms.txt](https://littlebirdelectronics.com.au/llms.txt).

# Fermion: AHT20 Temperature and Humidity Sensor (Breakout)

**Brand:** DFRobot

**URL:** https://littlebirdelectronics.com.au/products/fermion-aht20-temperature-and-humidity-sensor-breakout

## Pricing

- **Price:** $6.33
- **Stock:** In stock
- **Local warehouse:** 4 units
- **Supplier (DFRobot):** 157 units
- **SKU:** DF-SEN0527

## Description

The Fermion AHT20 is a high-precision, low-cost temperature and humidity sensor breakout from DFRobot. Built around an improved MEMS semiconductor capacitive humidity sensor element, it communicates over a standard I2C interface and operates across a wide 2–5 V supply range. The sensor performs reliably across a wide temperature range of −40 °C to +85 °C, making it suitable for environmental monitoring, HVAC systems, weather stations, and data logging applications. Key Features I2C Digital Output – Simple two-wire interface at address 0x38 Wide Voltage Range – 2 V to 5 V DC supply High Precision – ±0.3 °C temperature accuracy, ±2% RH humidity accuracy Excellent Long-Term Stability – Low drift over time Quick Response – Strong anti-interference performance Compact Breakout – 30 mm × 20.5 mm board with standard 2.54 mm header Specifications Operating Voltage: 2–5 V DC Interface: I2C (address 0x38) Board Dimensions: 30 mm × 20.5 mm (1.18″ × 0.81″) Humidity (AHT20) Resolution: 0.024% RH Accuracy: ±2% RH Repeatability: ±0.1% RH Hysteresis: ±1% RH Response Time: 8 s Operating Range: 0–100% RH Long-Term Drift: <0.5% RH/year Temperature (AHT20) Resolution: 0.01 °C Accuracy: ±0.3 °C Repeatability: ±0.1 °C Hysteresis: ±0.1 °C Response Time: 5–30 s Operating Range: −40 °C to +85 °C Long-Term Drift: <0.04 °C/year Ideal For HVAC and climate control systems Weather stations and data loggers Dehumidifier and appliance monitoring Automotive environmental sensing Package Contents 1× Fermion AHT20 Temperature and Humidity Sensor breakout 1× 2.54 mm 4-pin header Resources Product Wiki 2D Dimensions (PDF) Circuit Diagram (PDF)

**Product Type:** physical

## Images

- [Image 1](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCmBlJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--efbf1e0539e492fcbb7f758e5fb818f9d1bbbd95/image_7dadecb9-4048-4972-9d81-9ad3595cfd5d.png)

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## Finding & Searching Products

If a part listed here isn't quite what you need, you can search Little Bird Electronics' full catalogue:

- **Search by keyword:** `GET https://littlebirdelectronics.com.au/products.md?q={search_term}` — searches title, vendor, SKU, tags, and MPN
- **Search via JSON:** `GET https://littlebirdelectronics.com.au/products.json?q={search_term}` — structured JSON results
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- **Individual product detail:** `GET https://littlebirdelectronics.com.au/products/{handle}.md` — full specs, pricing, stock levels, variants

Search supports multi-word queries (AND logic). Examples:

- `https://littlebirdelectronics.com.au/products.md?q=raspberry+pi+5` — find Raspberry Pi 5 products
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- `https://littlebirdelectronics.com.au/products.json?q=micro+bit` — find micro:bit products as JSON

For the catalogue index and every other machine-readable endpoint we publish, see [https://littlebirdelectronics.com.au/llms.txt](https://littlebirdelectronics.com.au/llms.txt).

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## Contact Us

**Little Bird Electronics Pty Ltd**
ABN: 15 634 521 449

- **Phone:** 1300 240 817
- **Fax:** (02) 8319 2017
- **Email:** help@littlebird.com.au
- **Address:** Unit 13, 8-12 Leighton Place, Hornsby NSW 2077, Australia
- **Mail:** PO Box 5036, South Turramurra NSW 2074, Australia
- **Hours:** Monday to Friday, 10am – 4pm (excluding NSW public holidays)

### Payment Methods

- **Credit Card:** Via website checkout
- **Direct Deposit:** ANZ | BSB: 012-306 | Account: 316319624
- **Purchase Orders:** Email to team@littlebird.com.au (Net 30 for approved accounts)

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*Source: [Fermion: AHT20 Temperature and Humidity Sensor (Breakout)](https://littlebirdelectronics.com.au/products/fermion-aht20-temperature-and-humidity-sensor-breakout)*