Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Type	Digital Switching Output
Detection Distance	Approx. 15mm
Indicator LED	Yes (Power and Signal)
Mounting Hole Diameter	3mm
PCB Dimensions	32mm x 14mm
Connector Type	3-Pin PH2.0 Header
Compatible Platforms	Arduino, Raspberry Pi, ESP32
Switch Rating	Max 500mA @ 24V
Package Includes	1x Reed Switch Module, 1x Magnet

6 reviews

Anonymous

Mar 31, 2026

Rating: 4/5

Good value, small magnet

The sensor works flawlessly and responds instantly. My only minor complaint is that the included magnet is quite small, so you need to be precise with alignment. Otherwise, great product.

Anonymous

Mar 29, 2026

Rating: 5/5

Exactly what I needed

Simple, effective, and cheap. Used it to detect when a drawer is closed. The code to read the digital output is trivial. Very satisfied with this purchase.

Anonymous

Mar 25, 2026

Rating: 5/5

Perfect for DIY Security Projects

I used this module to create a simple door alarm system with my Arduino. The detection range is consistent, and the LED indicator makes debugging very easy. Highly recommended for beginners.

Anonymous

Mar 19, 2026

Rating: 5/5

Reliable and Compact

Bought five of these for a home automation project. All units performed identically. The PCB quality looks solid, and the soldering points are clear. No issues after two months of continuous use.

Anonymous

Mar 14, 2026

Rating: 5/5

Great for school projects

Easy to wire up following online tutorials. It worked on the first try with my ESP8266. The price point is unbeatable for the functionality provided.

Anonymous

Mar 11, 2026

Rating: 4/5

Solid performance

Works as expected for detecting position limits on my robot arm. The response time is fast enough for my application. Would buy again if I need more sensors.

5 FAQ

Q: Can I use this outdoors?

A: The PCB itself is not waterproof. If used outdoors, it must be housed in a weatherproof enclosure to protect it from moisture and dust.

Q: Does this module work directly with 3.3V logic levels?

A: Yes, the module operates comfortably within the 3.3V to 5V range, making it compatible with both 3.3V and 5V microcontrollers.

Q: Does the package include connecting wires?

A: No, the package includes the sensor module and the magnet only. You will need to provide your own jumper wires for connection.

Q: Is the magnet strong enough to work through a thin wooden door?

A: Yes, the detection distance is approximately 15mm, which is sufficient for most standard interior doors or thin wooden panels.

Q: What is the maximum current the reed switch can handle?

A: The internal reed switch is rated for a maximum of 500mA. For higher loads, we recommend using the module to trigger a relay or MOSFET.

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