Description
Magnetic Reed Round Switch Door Sensor with Wire MS-3 White (Normal Close/Normal Open)
The MS-3 Round Magnetic Reed Switch (NC/NO) is a compact recessed sensor used in doors, windows, cabinets, and security enclosures. It comes with a reed switch and magnet, supporting both NC (Normally Closed) and NO (Normally Open) wiring options. This dual functionality provides flexibility for various alarm and automation systems. When the magnet is aligned with the switch, the circuit state depends on the chosen wiring (NC or NO). When the door/window opens and the magnet moves away, the circuit changes state, triggering the connected alarm or controller.
Technical Specifications:
- Model: MS-3 Round (Dual NC/NO)
- Type: Magnetic Reed Switch with NC/NO selectable wiring
- Shape: Round recessed type
- 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: 3-wire connection (Red = NO, Black = NC, White = Common)
- Switch Type: Reed contact (supports both NC and NO)
- Mounting Style: Recessed (concealed installation)
Features:
- Dual mode support: NC (Normally Closed) and NO (Normally Open) in a single sensor
- Round recessed design for concealed installation
- Compact size suitable for wooden, plastic, or aluminium frames
- Durable ABS plastic body ensures long service life
- 3-wire output provides wiring flexibility
- High sensitivity and reliable switching mechanism
- Compatible with most wired security, alarm, and automation systems
Applications:
- Home Security: Door/window intrusion detection
- Commercial Buildings: Office entry monitoring, access control
- Industrial Use: Cabinet, server rack, and restricted access security
- Retail Security: Showcase and storeroom monitoring
- Automation Systems: Works with IoT controllers for smart home integration