Exploring the Wonders of MC-38 Magnetic Door Sensor Switches 

Are you ready to dive into the world of MC-38 Magnetic Door Sensor Switches? Great! In this blog post, we’ll explore the fascinating realm of these switches and understand their applications, features, and much more.


MC-38 Magnetic Door Sensor Switches are invaluable devices in the world of security and automation. These small but powerful components play a crucial role in various applications, ensuring safety and convenience. In this article, we’ll provide you with a comprehensive guide to these switches and everything you need to know about them.

What is a Magnetic Door Sensor Switch?

A Magnetic Door Sensor Switch is a simple yet highly effective device that operates using the principles of magnetism. It consists of two main components: a reed switch and a magnet. When the door is closed, the magnet is in close proximity to the reed switch, which keeps the circuit closed. However, when the door opens, the magnet moves away from the reed switch, causing the circuit to open and trigger an alarm or signal.

Breakdown of a Magnetic Door Sensor Switch

To understand this device better, let’s break it down:

  • Reed Switch: This is the core element of the sensor. It’s a type of electrical switch that is controlled by an applied magnetic field.
  • Magnet: The magnet is placed on the moving part of the door. Its position in relation to the reed switch determines whether the circuit is open or closed.


  1. Easy installation
  2. Reliable and durable
  3. Versatile applications
  4. Cost-effective
  5. Low power consumption
  6. Wide temperature range
  7. Tamper-resistant
  8. Compatibility with various systems
  9. Quick response time
  10. Long lifespan


SpecificationMaximum ValueMinimum Value
Operating Voltage24 V12 V
Current Rating0.5 A0.1 A
Temperature Range-20°C to 70°C-40°C to 85°C
Contact Resistance0.1 ohms0.01 ohms
Response Time5 milliseconds1 millisecond
Cable Length1 meter0.5 meters


Pin NamePin Description
VCCConnects to the power source
GNDGround connection
COMCommon terminal for the circuit

Application of Magnetic Door Sensor Switch

  1. Home security systems
  2. Commercial building security
  3. Access control systems
  4. Industrial automation
  5. Elevator door sensing
  6. Garage door monitoring
  7. Retail anti-shoplifting
  8. HVAC systems
  9. Data center security
  10. Smart lighting control

Datasheet of Magnetic Sensor

Download the Magnetic sensor Datasheet from the link given below.

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