Description
Magnetic Reed Switch Round Door Sensor with Wire MS-3 White (Normal Close)
The MS-3 Round Magnetic Reed Switch is a compact recessed round sensor used for security alarm systems, access control, and automation. It comes with two parts – a magnetic reed switch (with wires) and a magnet. This model is Normally Closed (NC), meaning the circuit remains closed when the magnet is aligned with the switch; when the door or window opens and the magnet separates, the circuit opens, triggering an alarm or control signal. It is suitable for concealed installation in wooden or plastic doors and windows.
Technical Specifications:
- Model: MS-3
- Type: Magnetic Reed Switch (Normally Closed – NC)
- Shape: Round recessed type with wire
- Color: White
- Dimensions:
- Length: 14.5 mm
- Diameter: 9.5 mm
- Material: ABS plastic housing
- Contact Rating: 100 mA @ 100 V DC (typical)
- Operating Gap: 15–20 mm
- Wire Leads: 2-wire connection, standard length 300–350 mm
- Switch Type: Reed contact, NC (breaks circuit when magnet is separated)
Features:
- Compact round recessed design for concealed installation
- Normally Closed (NC) reed switch operation
- Easy integration with wired alarm and automation systems
- High sensitivity with reliable operation
- Durable ABS plastic body for long service life
- Comes with pre-attached wire for quick connection
- Suitable for small and medium-sized doors and windows
Applications:
- Home Security: Door and window intrusion detection
- Office & Commercial Security: Access control systems
- Cabinets & Lockers: Monitoring unauthorized access
- Retail Showcases: Securing glass/wooden display units
- Automation Systems: Works with IoT-based smart home controllers