> **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

# Infrared Line/Object Presence sensor (Adjustable digital output)

**Type:** Product page · **SKU:** CE09445 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/line-sensor-adjustable-threshold.html ([markdown](https://core-electronics.com.au/line-sensor-adjustable-threshold.html.md))

Why sit around and reflect when you can use this sensor? Perfect for line or object detection.

## Pricing

- **Price:** $1.40 (inc GST) — $1.27 AUD, exc GST
- **Quantity discounts:** 25+ $1.21 (exc GST) · 50+ $1.15 (exc GST) · 100+ $1.08 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 04.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE09445:1` (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/CE09445:1.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

Perfect for detecting a line, a hand (without making contact), and any other reflective object for that matter!

The sensors are great value and compatible with any microcontroller, adjust the potentiometer to change the sensitivity and get live feedback with the onboard LED.

### Specifications

- 3.3-5V Operating range
- Adjustable threshold output
- [LM393 Datasheet](https://core-electronics.com.au/attachments/uploads/CE09445-LM393-datasheet.pdf)

### Examples

#### Raspberry Pi Pico - Micropython

 ```
from utime import sleep
import machine

onboard_led = machine.Pin(25, machine.Pin.OUT)
line_sensor = machine.Pin(0, machine.Pin.IN)

while True:
    if line_sensor.value() == 0:
        onboard_led.on()
    else:
        onboard_led.off()
        sleep(0.1)
```

## Images

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