> **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

# MCP9808 High Accuracy I2C Temperature Sensor Breakout Board

**Type:** Product page · **SKU:** ADA1782 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/mcp9808-high-accuracy-i2c-temperature-sensor-breakout-board.html ([markdown](https://core-electronics.com.au/mcp9808-high-accuracy-i2c-temperature-sensor-breakout-board.html.md))

This I2C digital temperature sensor is one of the more accurate/precise Adafruit have ever seen, with a typical accuracy of ±0.25°C over the sensor's -40°C to +125°C range...

## Pricing

- **Price:** $9.30 (inc GST) — $8.45 AUD, exc GST
- **Quantity discounts:** 10+ $8.20 (exc GST) · 50+ $8.04 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 5 today, and up to 500 more in 8–12 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA1782:1` (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/ADA1782:1.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

This I2C digital temperature sensor is one of the more accurate/precise Adafruit have ever seen, with a typical accuracy of ±0.25°C over the sensor's -40°C to +125°C range and precision of +0.0625°C. They work great with any microcontroller using standard i2c. There are 3 address pins so you can connect up to 8 to a single I2C bus without address collisions. Best of all, a wide voltage range makes is usable with 2.7V to 5.5V logic!

Unlike the DS18B20, this sensor does not come in through-hole package so they placed this small sensor on a breakout board PCB for easy use. The PCB includes mounting holes, and pull down resistors for the 3 address pins. They even wrote a lovely little tutorial and library that will work with any Arduino compatible. You'll be up and running in 15 minutes or less.

Some quick specs:

- Simple I2C control
- Up to 8 on a single I2C bus with adjustable address pins
- 0.25°C typical precision over -40°C to 125°C range (0.5°C guaranteed max from -20°C to 100°C)
- 0.0625°C resolution
- 2.7V to 5.5V power and logic voltage range
- Operating Current: 200 µA (typical)

## Technical Details

Technical specs:

- Sensing Temperature: -40ºC ~ 125ºC
- Accuracy: 0.25ºC typical
- Voltage - Supply: 2.7V ~ 5.5V
- Operating Temperature: -40ºC ~ 125ºC
- Uses any I2C address from 0x18 thru 0x1F
- [Datasheets, Fritzing object, PCB CAD files and more in the tutorial](https://learn.adafruit.com/adafruit-mcp9808-precision-i2c-temperature-sensor-guide/downloads)

Dimensions:

- 21mm x 13mm x 2mm / 0.8" x 0.5" x 0.08"
- Weight: 0.9g

 ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/7/1782-00.jpg)