Ajax Perimeter Protection – Advanced External Security
Elron Fire & Security Ltd | Ajax Authorised Installers
Perimeter protection is your first and most vital line of defence — detecting intruders before they reach your building, enter your grounds, or cause damage. As official Ajax Authorised Installers, we design and install complete perimeter security systems using the full range of Ajax outdoor and boundary detection devices, engineered to the highest standards, fully wireless, and built to withstand all UK weather conditions.
⚙️ How Ajax Perimeter Protection Works
Unlike standard alarm systems that only detect movement inside a building, Ajax perimeter devices create an invisible security shield around your entire property. Here is exactly how the system operates to keep you safe:
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Early Detection: Sensors are installed along boundaries, walls, fences, driveways, and access points. They monitor these zones 24/7 and detect any unauthorised activity the moment it happens — often before an intruder even attempts to enter a building.
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Smart Technology & Verification: Every device uses advanced algorithms, dual sensors, and signal processing to analyse what is happening. They distinguish reliably between real threats and common triggers like wind, rain, leaves, small animals, or passing cars — meaning virtually zero false alarms.
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Instant Wireless Communication: All devices connect wirelessly via Ajax’s unique Jeweller protocol — ultra-secure, long-range, and fully encrypted. Signals travel up to 1,700 metres in open space and penetrate through walls and buildings without interference.
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Real-Time Alerts: The second a sensor is triggered, you receive an instant notification on your smartphone via the Ajax App — showing exactly which device activated and where on your property the event occurred. For systems with cameras or detectors like CurtainCam, you also receive photos instantly to verify the alarm.
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Action & Control: You can trigger external sirens, switch modes, or contact authorities directly from your phone. With our optional 24/7 Professional Monitoring, our team receives the alert instantly and takes action on your behalf, day or night.
This approach moves security from reaction to prevention, stopping crime before it happens.
Full Range Of Ajax Perimeter Devices
1. DualCurtain Outdoor Jeweller
Dual-zone curtain detector – Grade 2 / Grade 3 options
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Detection pattern: Two independent, narrow curtain-style beams (1.2m–12m range each), adjustable separately. Covers walls, fences, windows, and boundaries without covering public paths or neighbouring land.
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Technology: Dual PIR sensors + ELSA digital signal processing. Triggers alarm only when both sensors detect movement — eliminates false alarms from wind, animals, or vegetation.
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Anti-masking & tamper: Detects if lenses are covered, painted, or blocked; alerts instantly. Tamper switch prevents unauthorised removal.
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Weatherproof: IP55 rated; operates -25°C to +60°C; rain, snow, dust, and UV resistant.
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Wireless: Jeweller protocol — up to 1,700m range open area, fully encrypted, anti-jam.
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Certified: EN 50131 compliant; suitable for insurance-approved systems.
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Best for: Perimeter walls, gardens, yards, commercial boundaries, and large properties.
2. MotionProtect Outdoor Jeweller
Wide-area outdoor motion detector – Grade 2
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Coverage: 90° wide angle, up to 15m range. Detects human movement across open areas, driveways, and access routes.
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Smart detection: Advanced algorithm distinguishes people from animals, cars, or environmental movement — virtually zero false alarms.
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Pet immunity: Up to 40kg; safe for dogs, cats, and wildlife.
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Environmental protection: IP55; temperature-stabilised optics; works reliably in rain, sun, or cold.
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Anti-masking: Alerts if the device is obstructed or blinded.
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Best for: Open grounds, car parks, yards, farm buildings, and wide access points.
3. Curtain Outdoor Mini Jeweller
Compact narrow-beam detector – perfect for windows & doors
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Size & coverage: Slim design; 0.5m–7m range, very narrow detection zone. Fits tight spaces — ideal for ground-floor windows, patio doors, and low-level openings.
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Two modes:
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Main Mode: High sensitivity, detects any human movement.
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Pet Mode: Ignores small animals, protects only against people.
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No blind spots: Covers the full height and width of the protected area.
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Weatherproof: IP54; built for external use.
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Best for: Domestic properties, window protection, shop fronts, and narrow boundaries.
