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Detect Nearby Objects Without Contact
The Magnetic contact switch door sensor is a button or switch input module designed for obstacle detection, touchless triggers, object counting, and simple automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Rated voltage: 200 VDC max; Interface: Digital GPIO; Box size (each side): 29mm x 14mm x 9mm / 1.1" x 0.6" x 0.4".
Why you’ll love it
- Power range: 200 VDC max
- Current draw: 100 mA max
- Compact size: 29mm x 14mm x 9mm / 1.1" x 0.6" x 0.4"
- Useful spec: 15mm max
- Sensor size: 305mm ± 12mm / 12" ± 0.5"
- Easy wiring: Digital GPIO
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| Magnetic contact switch door sensor | button or switch input module | Current item |
| Reed Switch Module | magnetic sensor with digital output | general-purpose sensing |
| Non-Contact Liquid Level Switch | button or switch input module | general-purpose sensing |
| Float Switch Plastic Water Level Control | liquid level sensor | general-purpose sensing |
What you can build
This sensor is a good fit for robot obstacle avoidance, touchless dispensers, automatic doors, object counters, parking aids, and level alarms.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard and jumper wires for quick setup and testing.
Recommended add-ons
Useful add-ons include a microcontroller board, jumper wires, and pull-up or pull-down support when needed, depending on how you plan to power, mount, and log the sensor.
Technical specifications
| Product | Magnetic contact switch door sensor |
|---|---|
| Rated voltage | 200 VDC max |
| Rated current | 100 mA max |
| Box size (each side) | 29mm x 14mm x 9mm / 1.1" x 0.6" x 0.4" |
| Distance | 15mm max |
| Cable Length | 305mm ± 12mm / 12" ± 0.5" |
| Weight (per side) | 5.4g |
| Interface | Digital GPIO |
Wiring & usage notes
Connect power and ground, then wire the output pin to a digital GPIO input. Check whether the module uses active-high or active-low logic in your code.
What’s in the box
1 × Magnetic contact switch door sensor
Frequently Asked Questions
What does the Magnetic contact switch door sensor measure?
It is designed to measure magnetic field or magnetic presence.
Can I use it with Arduino, ESP32, or Raspberry Pi?
Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this Digital GPIO sensor?
This sensor provides a digital switching-style signal that is easy to read from a GPIO pin.
What affects accuracy?
Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
Is it good for prototyping?
Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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