Description
Overview
The FSH FSS1-S-NC is a world-class high-security door position sensor (DPS) engineered for government, defence, military, and financial institution installations across Australia. The NC (No Conduit) variant features a rear-cable entry design for a clean, tamper-resistant finish without external conduit — ideal for installations where aesthetics and covert cable routing are required. Like the FSS1-S, it uses seven Hall-effect sensors to detect a unique 3D magnetic footprint, carrying SCEC Security Level 4 (SL4) approval — the highest rating for Australian Government and defence door monitoring.
Key Features
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SCEC SL4 Approved – Highest Australian Government security rating for door monitoring sensors; also UL 634 Level 2 certified.
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No-Conduit (NC) Design – Rear-cable entry provides a clean, tamper-resistant finish without external conduit runs.
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7 Hall-Effect Sensors – Detects a unique 3D magnetic footprint using up to 8 magnets — cannot be defeated by external magnets or standard bypass techniques.
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IP67 Environmental Protection – Fully sealed for indoor and outdoor high-security applications in Australian conditions.
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Smart Self-Calibration – Learns its environment on first door closure; recalibrates to account for door drop or maintenance over time.
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Advanced Anti-Tamper – Detects magnetic, electronic, and physical attacks via a memorised magnetic signature and multiple tamper switches.
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Wide Voltage Range – Operates on 10–30VDC; compatible with Type 1/1A and Class 5 E.O.L. modules.
Technical Specifications
| Specification |
Detail |
| Model |
FSH FSS1-S-NC (Surface Mount, No Conduit) |
| Security Level |
SCEC SL4 Approved / UL 634 Level 2 |
| Mounting Type |
Surface Mount – Rear Cable Entry (No Conduit) |
| Operating Voltage |
10–30VDC |
| Current Consumption |
<45mA |
| Sensors |
7 Hall-Effect Sensors / Up to 8 Magnets |
| Door Gap Tolerance |
1mm – 7mm |
| Contacts |
N.C. / N.O. (0.2A @ 30V) |
| Environmental Rating |
IP67 Weatherproof |
| Dimensions |
75mm (L) × 34mm (H) × 35mm (D) |
Use Cases
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Australian Government Facilities – SCEC SL4 approval meets the highest Australian Government security requirements for door monitoring.
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Defence & Military Installations – Tamper-resistant 3D magnetic footprint detection for perimeter and internal high-security doors.
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Financial Institutions – Secure vault, server room, and controlled access doors requiring advanced, defeat-resistant door monitoring.
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Data Centres & Critical Infrastructure – Covert rear-cable entry suits installations where concealed wiring and clean aesthetics are required.
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Retrofit Installations – Surface mount design allows installation on existing high-security door frames; no-conduit entry simplifies cable routing in finished environments.
Frequently Asked Questions
- What is the difference between the FSS1-S and the FSS1-S-NC?
- Both are surface mount versions of the FSS1 high-security door sensor. The FSS1-S includes a conduit entry for external cable routing, while the FSS1-S-NC uses a rear-cable (no conduit) entry for a cleaner finish and more covert installation. Choose the NC version when external conduit is not permitted or aesthetics require concealed cabling.
- What does SCEC SL4 approval mean?
- SCEC (Security Construction and Equipment Committee) Security Level 4 is the highest security rating for door monitoring sensors used in Australian Government and defence facilities. SL4 approval means the FSS1-S-NC has been independently evaluated and certified for use in the most sensitive and high-risk environments.
- How does the FSS1-S-NC differ from a standard balanced magnetic sensor?
- A standard balanced magnetic sensor uses a single magnet and can be defeated by placing an external magnet near the sensor. The FSS1-S-NC uses seven Hall-effect sensors to detect a unique 3D magnetic footprint created by up to 8 magnets — this combination cannot be replicated or defeated by external magnets.
- How does the self-calibration work?
- On first door closure after installation, the FSS1-S-NC learns its magnetic environment and stores this as its reference footprint. If the door drops over time or maintenance is performed, the sensor can be recalibrated to the new door position without replacement.
- Is the FSS1-S-NC suitable for outdoor installation?
- Yes. The FSS1-S-NC carries an IP67 rating, meaning it is fully protected against dust ingress and temporary immersion in water — suitable for outdoor and exposed door frame installations in Australian conditions.
