GPS-01 Normally Open Reed Switch – 4x18 to 6x30mm | Black
GPS-01 Normally Open Reed Switch – 4x18 to 6x30mm | Black
GPS-01 Normally Open Magnetic Reed Switch – Multiple Size Options
The GPS-01 Black Reed Switch is a compact, high-sensitivity normally open magnetron proximity sensor designed for seamless integration into security systems, automation circuits, door/window sensors, and DIY electronics projects. Available in multiple sizes — 4×18mm, 5×25mm, 6×20mm, 6×25mm, and 6×30mm — this switch delivers fast, accurate magnetic field detection in a slim plastic housing.
Key Features
- Multiple Size Options: Choose from 4×18mm, 5×25mm, 6×20mm, 6×25mm, or 6×30mm to perfectly fit your installation requirements.
- High Sensitivity: Quickly and accurately detects magnetic proximity, ensuring a fast and reliable switching response every time.
- Normally Open (NO) Design: The circuit remains open until a magnet is brought close, making it energy-efficient and easy to integrate into low-voltage control systems.
- Low Voltage Compatible: Rated for use below 50Vac or 75Vdc, suitable for a wide range of electronic applications.
- Durable Plastic Housing: Lightweight yet sturdy black plastic body built for long-term, reliable performance.
- Plug-and-Play Installation: Simple two-wire connection for quick setup in new or existing circuits.
Specifications
- Model: GPS-01
- Type: Normally Open (NO) Reed Switch
- Available Sizes: 4×18mm / 5×25mm / 6×20mm / 6×25mm / 6×30mm
- Color: Black
- Material: Plastic
- Voltage Rating: Below 50Vac or 75Vdc
- Package Contents: 1 × Reed Switch
- Made in Mainland China
Applications
- Door and window security alarms
- Home automation and smart home systems
- DIY electronics and Arduino/Raspberry Pi projects
- Industrial and commercial proximity detection
- Position sensing and relay triggering circuits
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Note: Due to manual measurement, please allow a tolerance of 1–3mm. Colors may vary slightly between devices due to different display settings.
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What does "normally open" mean for a reed switch?
A: A normally open (NO) reed switch means the electrical circuit is open (no current flows) when no magnet is present. When a magnet is brought close enough to the switch, the internal contacts close, completing the circuit. This design is energy-efficient because power is only consumed when the magnet activates the switch.
Q: Which size GPS-01 reed switch should I choose?
A: Choose based on the mounting hole or housing size in your device. The 4×18mm is ideal for very compact spaces, while the 6×25mm and 6×30mm options suit larger enclosures. Always verify the bore diameter and depth of your installation point before selecting a size.
Q: Is the GPS-01 reed switch compatible with Arduino or Raspberry Pi projects?
A: Yes! Since this reed switch operates below 50Vac or 75Vdc, it is fully compatible with low-voltage microcontroller platforms like Arduino and Raspberry Pi. Simply connect it in series with your signal or GPIO circuit for easy magnetic proximity detection.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.