Optex REDWALL SIP-100 Long-Range Perimeter PIR Detector SIP-100

Introduction: Optex REDWALL SIP-100 at a glance

Optex REDWALL SIP-100 — long‑range perimeter PIR detector for CCTV integrationis a purpose‑built sensor designed to protect linear perimeters such as fences, walkways and building lines. With a narrow, long detection curtain of 100 × 3 m, three independent zone outputs (far, near and creep), anti‑masking and anti‑rotation protection, and intelligent auto‑sensitivity, the SIP‑100 is engineered to trigger PTZ cameras, recorders or access control logic while minimising nuisance alarms. For commercial and industrial perimeter applications where accurate staging of events is required, the SIP‑100 offers a compact, rugged option tuned for practical integration with modern video management systems.

Key features

• Long, narrow detection curtain:100 × 3 m coverage that creates a focused line of detection ideal for fences and approach paths.
• Three independent zone outputs:Far, Near and Creep outputs with configurable N.O./N.C. contacts for staged alarm workflows and camera presets.
• Intelligent PIR algorithm:Auto‑adjusts sensitivity using ambient temperature and illuminance to reduce false alarms from environmental changes.
• Anti‑vandal protection:Active IR anti‑masking and a 3‑axis accelerometer (anti‑rotation) to detect tampering.
• Rugged outdoor design:IP65 main unit, wide operating temperature range and optional heater for extreme environments.

Detailed specifications and benefits

The SIP‑100 combines focused detection geometry with practical installer features. The core technical specifications drive its benefits in real world installations:

• Detection method:Passive infrared (PIR) — reliable motion sensing that detects heat differentials from human intruders over a long linear pattern.
• Detection coverage:100 × 3 m (330 × 10 ft) — creates a narrow curtain rather than a broad area, making it suitable for monitoring approach along fences or corridors where lateral motion must be captured without excessive coverage behind the perimeter.
• Creep / zero zone:Adjustable near/creep zone (approx. 3 × 5 m at 2.3 m install; up to 6 × 9 m at 4 m) — delivers staged detection that can trigger local alarms or camera pre‑sets when someone approaches the fence line closely.
• Mounting height:2.3–4 m — recommended installer range that balances detection geometry with practical mounting on walls or poles.
• Outputs & output rating:Independent far, near and creep outputs (N.O./N.C. configurable) with typical switching of 28 VDC, 0.2 A max — enables integration with VMS, NVRs or access controllers to create event‑driven workflows.
• Power & current draw:11–26 VDC (22–26 VAC supported); current draw ~50 mA (12 VDC) or ~90 mA (24 VAC); increases if heater fitted — flexible power options for different site infrastructure.
• Warm‑up & alarm timing:Approx. 60 seconds warm‑up; alarm output period approx. 2 seconds — quick readiness and short event triggering suitable for camera workflows.
• Operating temperature & ingress protection:−25 to +60 °C (−40 to +60 °C with optional heater) and IP65 main unit — robust performance for outdoor installations in diverse climates.
• Anti‑vandal and detection fidelity:Double Quad pyro‑elements with conductive shielding, active IR anti‑masking and 3‑axis accelerometer — designed to maintain detection integrity and resist tampering or masking attempts.
• Physicals:Weight approx. 1.6 kg and compact dimensions (271 × 102 × 290 mm) allow discreet mounting along fences and walls.

Benefit highlights: the combination of a long, curtain‑style detection field and independently configurable outputs gives security designers the ability to stage alerts (early‑warning far alarms; confirmatory near/creep alarms) and to map each stage to different camera or recording actions. The smart algorithm reduces nuisance activations from temperature shifts or changing light, while the anti‑mask and anti‑rotation features add a layer of tamper detection important for unattended perimeter sites.

Use cases and scenarios where the SIP‑100 excels

The SIP‑100 is targeted at perimeter situations where a long, linear detection pattern and staged responses are more valuable than broad area coverage. Typical scenarios include:

• Perimeter fence protection:Install along fences to detect approach from a distance, trigger PTZ presets to sweep toward an intruder, and escalate to recording or local alarms as the subject progresses toward the inner site.
• Walkways and service roads:Protect narrow corridors where crossing beams or wide‑angle sensors would either be excessive or miss approach along the path.
• Critical infrastructure and utilities:Chemical plants, substations and water treatment sites benefit from staged detection that can initiate verification cameras and control room workflows before escalation.
• Perimeter sectors for PTZ integration:The three independent outputs map naturally to camera automation: far zone for pre‑alarm camera position, near zone for focused acquisition, and creep zone for close‑in warnings or access interlocks.
• Low‑light and outdoor environments:Anti‑masking and wide temperature tolerance make the SIP‑100 suitable for remote installations that require continuous, reliable detection with minimal on‑site maintenance.

Comparisons with similar products

When choosing perimeter sensors, designers commonly consider curtain PIR sensors, dual‑technology beams and active infra‑red (AIR) barriers. Compared with those alternatives, the SIP‑100 offers a distinct set of tradeoffs:

• Vs. beam/active IR barriers:Beams provide very long ranges but require precise alignment and can be defeated by small obstructions. The SIP‑100 provides a detection curtain that tolerates minor obstructions and offers staged outputs for event management, at the cost of slightly shorter maximum single‑line range than some beam installations.
• Vs. dual‑technology detectors (PIR + microwave):Dual tech can reduce false alarms but adds complexity and sensitivity to environmental clutter. The SIP‑100 relies on a tuned PIR algorithm and shielding to minimise nuisance activations while keeping installation and calibration simpler than integrating two sensor types.
• Vs. wide‑angle PIRs:Wide‑angle PIRs cover broad areas but can detect unwanted movement behind the perimeter or have larger dead zones close to the sensor. SIP‑100’s narrow curtain and dedicated creep zone are optimised for linear approach detection and closer‑range staging.
• Market positioning:The SIP‑100 sits in the mid‑to‑high tier for perimeter PIRs due to its tailored detection geometry, zone outputs and anti‑vandal features. It competes well where CCTV integration and staged responses are a priority rather than raw area coverage or the lowest possible equipment cost.

Conclusion: why choose the Optex SIP‑100?

The Optex REDWALL SIP‑100 is a specialist perimeter detector that excels where a long, narrow detection curtain and staged alarm outputs are needed. Its core strengths are practical: focused 100 × 3 m coverage, independent far/near/creep outputs that map easily to camera and recording logic, intelligent PIR processing to limit nuisance alarms, and anti‑vandal features for secure outdoor installations. For sites such as fenced perimeters, walkways and critical infrastructure where early detection and graduated responses are required, the SIP‑100 provides a straightforward, integrable solution.

If your project requires reliable linear detection tied into PTZ routines and VMS events, and you want a robust, outdoor‑rated detector that reduces false positives while offering tamper alerts, the SIP‑100 is a strong choice. As always, engage a professional installer to fine‑tune mounting height and sensitivity settings for your site conditions, and verify current pricing, warranty and accessory options (such as the optional heater or mounting aids) with your supplier before purchase.