MC-38 Magnetic Switch Sensor is a wired reed switch and magnet contact pair designed for home security alarm systems, Arduino projects, and smart home automation in Bangladesh. This normally closed (NC) magnetic contact sensor detects door or window opening by separating the magnet from the reed switch, triggering an alarm or signal. Compact design, easy installation, and reliable performance make it ideal for burglar alarm systems and DIY electronics projects. Available from BDTronics Bangladesh for security and automation applications.

Features:

• Magnetic Reed Switch Sensor: Includes one wired reed switch unit and one magnet unit

• Normally Closed (NC) Output: Circuit remains closed when magnet and switch are together; opens when separated

• Ideal for Home Security: Commonly used for door alarm, window alarm, and burglar alarm systems

• Arduino Compatible: Suitable for Arduino based home automation and IoT security systems

• Reliable Trigger Mechanism: Activates alarm when door or window is opened

• Compact and Lightweight Design: Easy mounting on wooden, aluminum, or PVC doors and windows

• Low Power Consumption: Designed for low current security circuits

• Durable ABS Housing: Provides long-lasting performance in indoor installations

• Easy Wiring Interface: Pre-attached cable for quick connection to control panel or microcontroller

Applications:

• Home security alarm system

• Door open detection system

• Window intrusion detection

• Arduino burglar alarm project

• Smart home automation system

• Office and shop security monitoring

• Industrial cabinet door monitoring

How It Works:

• Install reed switch part on fixed frame

• Install magnet part on moving door or window

• When door/window is closed, magnet keeps switch closed (NC state)

• When door/window opens, magnet separates from switch

• Circuit opens and sends signal to alarm controller or Arduino

Installation Guide:

• Mount both parts aligned within 15–25 mm operating distance

• Connect two wires to alarm control panel or microcontroller digital input

• Test system by opening and closing door to verify signal detection

• Secure with screws or strong adhesive tape

Specifications:

• Model: MC-38

• Sensor Type: Magnetic Reed Switch

• Contact Type: Normally Closed (NC)

• Rated Current: 100mA

• Power Rating: 3W

• Operating Distance: 15 – 25 mm

• Cable Length: 30.5 cm ± 12 mm

• Housing Material: ABS

• Application: Home security and automation systems

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