Description
Reviews
| 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 |
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.
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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