Datasheet
Device Type: Wired Magnetic Contact Sensor for Shutter & Roller Doors
Typical Part Numbers/SKUs: MD-155, A-SC4, MC-RMMC, 4RSC50SS300GN, RS002
Brand: Varies (Meian, FDP, CQR, Elmdene, or generic)
Technology: Reed Switch (Magnetic Contact)
Mechanism: When the door is closed and the magnet is aligned, the reed switch circuit is closed (or opened, depending on NO/NC configuration); when the door opens and the magnet separates, the circuit changes state, triggering an alarm signal to the control panel.
Contact Output Options: Selectable Normally Open (NO) or Normally Closed (NC)
Maximum Detection Gap: Up to 50 mm (typical); some models up to 60–65 mm
Magnet Type: Neodymium (high-power, resistant to demagnetisation)
Electrical Parameters:- Maximum Switching Voltage: 100 V DC / 100 V AC
- Maximum Switching Current: 500 mA – 1 A (model dependent)
- Maximum Switching Power: 10 W (typical)
- Contact Rating (alternate spec): 48 V DC / 500 mA / 10 VA (some models)
Cable & Wiring:- Cable Type: 2-wire or 4-wire (4-wire includes tamper loop)
- Cable Length: 55–60 cm (standard); 2 m, 6 m, 10 m options available for some models
- Wire Protection: Metal mesh or steel-core sheath for tamper resistance
Physical Specifications (Typical):- Detector (Contact) Size: 106 × 38 × 10 mm (compact); 151 × 41 × 12 mm (heavy-duty); 175 × 52 × 15 mm (industrial)
- Magnet Size: 106 × 16 × 16 mm (standard); 60.5 × 28.5 × 12 mm (compact); 85 × 70 × 35 mm (industrial)
- Housing Material: Metal or heavy-duty aluminium casing for durability and tamper resistance
Environmental & Protection:- Operating Temperature: –40 °C to +70 °C
- Ingress Protection: IP65 or IP67 (outdoor-rated models)
- Shock Resistance: Up to 24 kg mechanical shock resistance
Compliance & Certification:- Security Grade: Grade 2 (EN 50131-2-6) for professional intrusion systems
- Environmental Class: Class 2 / Outdoor IP65
Installation:- Mounting Type: Surface mount via screws or double-sided tape
- Alignment: Contact and magnet must be aligned axially; offset reduces detection distance
- Wiring Notes: For doors wider than 1.5 m, two shutter door contacts are recommended for reliable coverage
- Tamper Protection: 4-wire models include a tamper loop that triggers an alarm if the housing is opened or the cable is cut
Key Specs: Magnetic Contact Sensor for Shutter & Roller Doors, Reed Switch Technology, Up to 50 mm Detection Gap, NO/NC Selectable Output, Neodymium Magnet, Metal/Aluminium Housing, 2-Wire or 4-Wire (Tamper) Wiring, IP65/IP67 Outdoor Rated, EN 50131-2-6 Grade 2 Certified, –40 °C to +70 °C Operating Range, Surface Mount Installation
Usage: Perimeter protection for commercial and industrial shutter doors, retail storefronts, warehouses, garages, workshops, and any roller or sliding metal door requiring intrusion detection within an alarm system. Ideal for high-vibration, harsh, or outdoor environments where a wide sensing gap accommodates large door tolerances.
