> **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

# Panel Mount Ultrasonic (Sonar) Ranging Module with UART Output

**Type:** Product page · **SKU:** ADA4665 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/panel-mount-ultrasonic-sonar-ranging-module-with-uart-output.html ([markdown](https://core-electronics.com.au/panel-mount-ultrasonic-sonar-ranging-module-with-uart-output.html.md))

This sleek looking 'button' is actually an ultrasonic sensor, ready for panel mount use. Inside is a module that uses high frequency signals to determine distance to a surface.

## Pricing

- **Price:** $35.10 (inc GST) — $31.91 AUD, exc GST
- **Quantity discounts:** 10+ $30.95 (exc GST) · 50+ $30.31 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA4665:1` (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/ADA4665:1.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 sleek looking 'button' is actually an ultrasonic sensor, ready for panel mount use. Inside is a module that uses high frequency signals to determine distance to a surface. It's elegant looking and is more durable than the 'raw' ultrasonics Adafruit sell a lot of, so it would do well in a garage, robot or installation where you want a durable dust and weather-resistant design. It has a range of 28 cm to 450 cm with a read resolution of 1mm (precision is 1 cm).

This sensor has UART output, so it can connect to a microcontroller or microcomputer with a TTL serial port. You can also connect it to a computer [using a USB-to-serial adapter](https://core-electronics.com.au/usb-to-ttl-serial-cable-debug-console-cable-for-raspberry-pi.html) and read data from the operating system's COM or serial port device.

It comes with a 2mm pitch connector you can cut off or re-purpose. To use, simply connect the red wire #1 to 5V, black wire #2 to ground, skip #3 and connect #4 to your serial input pin and read the data in at 9600 baud. [Check out Adafruit's Arduino and Python example code to get readings in a jiffy!](https://github.com/adafruit/Adafruit_Learning_System_Guides/tree/master/DYP_ultrasonics)

This sensor has a 'blind' zone distance of 0 to 28 cm, that means *it can't accurately tell when something is less than that distance away*. it's best used when you know that the object you're sensing is at least 30 cm from the sensor!

[We carry a large variety of distance sensors here if this fellow isn't what you're looking for.](https://core-electronics.com.au/search/?q=distance+sensors)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/4/6/4665-02.jpg)