> **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).

# Magnetic contact switch (door sensor)

**Brand:** Adafruit

**URL:** https://littlebirdelectronics.com.au/products/magnetic-contact-switch-door-sensor

## Pricing

- **Price:** $4.88
- **Stock:** In stock at supplier
- **Local warehouse:** 0 units
- **Supplier (Adafruit):** 100 units
- **SKU:** AF-375

## Description

A magnetic reed switch encased in an ABS plastic shell, commonly used to detect when a door, window, or drawer is opened. The switch half contains a normally-open reed contact, and the other half is a magnet. When the magnet is within 13 mm (0.5"), the reed switch closes, completing the circuit. Key Features Normally Open – Closes when the magnet is within 13 mm ABS Plastic Housing – Durable enclosure for both halves Mounting Tabs – Screw holes for secure installation Two-Wire Connection – Simple integration with any microcontroller or alarm system Ideal For Door and window open/close detection Drawer and cabinet monitoring Security and alarm systems Home automation triggers Tip: Double-sided foam tape from a hardware store works well for mounting without screws. Package Contents 1× Reed switch half (with wires) 1× Magnet half Mounting screws

**Product Type:** physical

## Images

- [Image 1](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkC4KRJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--090c1e8bf733c02634bf6f7519c491cbb5c9d1b2/image_0d830379-9a4e-409b-9465-69833b5a1e27.jpg)

- [Image 2](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkC4aRJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--55df7445af01d08ddf584e6df078547c753e450b/image_c8957d0c-a4f9-450d-8ed9-f289aafc7568.jpg)

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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
- **Browse by collection:** `GET https://littlebirdelectronics.com.au/collections/{handle}.json` — products in a specific collection
- **Filter in-stock only:** `GET https://littlebirdelectronics.com.au/products.md?q={term}&in_stock=1`
- **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
- `https://littlebirdelectronics.com.au/products.md?q=arduino+sensor` — find Arduino-compatible sensors
- `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: [Magnetic contact switch (door sensor)](https://littlebirdelectronics.com.au/products/magnetic-contact-switch-door-sensor)*