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D-FENCE Electronic Fencing and Security Systems Ltd.D-FENCE Electronic Fencing and Security Systems Ltd.
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The threat · Intruders coming in over the roof?

D-Roof

Strain-gauge sensors under or on top of any roof turn it into a protected zone, with a completely invisible appearance.

Invisible installation
Any roof typeUp to 6 m per stripZones up to 36 m
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For integrators & consultants

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DatasheetPDF · 274 KBTender specification textCopy text
Render of a brick house with a flat roof around a dormer: D-Roof sensor panels are set into the roof surface, a person walks onto them and a wall camera watches the roof

Close the roof, the entry nobody watches.

D-Roof is the D-FENCE intrusion detection system for roofs. It is installed under or on top of any type of roof, with a totally invisible appearance, and its built-in strain-gauge sensor adapts to the roof's design to give a real pre-alarm.

01

Close the forgotten entry

Roofs, dormers and parapets get the same protection as the fence line.

02

The roof keeps its look

Nothing is added to the skyline; the sensors are under the finish.

03

Early warning

The alarm comes while the intruder is still on the roof.

The moment an intruder enters a protected section, the pressure change raises the alarm and the D-FENCE computerised control centre is notified. On tiled roofs the sensor strips are laid under the tiles; on flat roofs they sit under sensor panels set into the roof surface.

Strips are customised to the roof, up to 6 m per unit, and carry covers of up to 350 kg; zones run up to 36 m. D-Roof shares the D-Tech specification and outputs, so it joins the rest of the site's perimeter on one screen.

From the first touch to the right response.

  1. Roof sensors

    Strain-gauge strips lie under the tiles or roof panels.

  2. Pressure change

    An intruder stepping onto a protected section changes the load.

  3. Processor

    About 15 kg above the cover weight raises the alarm; dry contact or RS485 out.

  4. Control centre

    The D-FENCE computerised control centre and D-Command Control are notified.

Seen in full.

Every image opens full size. Product sheets are shown whole, exactly as D-FENCE publishes them.

FIG. 01Installation: the sensor rails go under the tiles.
FIG. 02One line along the roof slope protects the whole approach.
FIG. 03Laid by hand, tile by tile.
FIG. 04High-rise roofs: the parapet is the first line.

Specifications & documents.

SpecificationsD-Roof
Installation
Under or on top of any type of roof; invisible appearance
Strip length
Customised to the roof; max. 6 m per unit
Cover weight
Up to 350 kg (higher to customer specification)
Cover height / design
To customer specification
Length of system zone
Up to 36 m
Minimum trigger force
Usually 15 kg above the static weight of the cover
Dry contact
N.O. & N.C., 1A@48VDC
Power supply
12 VDC
Communication output
RS485 serial interface
Operating temperature
+72 °C to −25 °C (162 °F to −13 °F)
Storage temperature
+80 °C to −55 °C (176 °F to −67 °F)
Corrosion
Anti-corrosion treatment to MIL-T-152; all parts stainless steel
Humidity
95%
Transients / EMI
MIL-STD-9094; MIL-STD-461, 462
False alarm rate (catalogue)
Less than 1 per km per 3 months
MTBF (sensor)
4.7 × 10⁸ h
MTTR
30 min
Warranty
10 years on the sensors

Specification text, ready for your tender.

Copy it into your specification. It describes the system by what it must do, so any alternative has to meet every point.

D-RoofTender specification textDatasheet

  1. General

    The system shall be D-Roof by D-FENCE Electronic Fencing and Security Systems Ltd. (ISO 9001:2015 certified quality management), or an approved equivalent that meets every requirement in this section.

  2. Function

    Strain-gauge sensors under or on top of any roof turn it into a protected zone, with a completely invisible appearance.

  3. The system shall provide

    • Any roof: Under or on top of tiled, flat or panel roofs.
    • Invisible: The sensors disappear under the tiles or roof panels.
    • Pre-alarm: The intruder is reported on the roof, before he reaches a window or hatch.
    • Made to the roof: Strip length customised, max. 6 m per unit; covers up to 350 kg.
    • Weight-based: Usually 15 kg above the static weight of the cover triggers the alarm.
    • Control-centre ready: Dry contact N.O. / N.C. and RS485 to the D-FENCE control centre.

  4. Technical requirements

    • Installation: Under or on top of any type of roof; invisible appearance
    • Strip length: Customised to the roof; max. 6 m per unit
    • Cover weight: Up to 350 kg (higher to customer specification)
    • Cover height / design: To customer specification
    • Length of system zone: Up to 36 m
    • Minimum trigger force: Usually 15 kg above the static weight of the cover
    • Dry contact: N.O. & N.C., 1A@48VDC
    • Power supply: 12 VDC
    • Communication output: RS485 serial interface
    • Operating temperature: +72 °C to −25 °C (162 °F to −13 °F)
    • Storage temperature: +80 °C to −55 °C (176 °F to −67 °F)
    • Corrosion: Anti-corrosion treatment to MIL-T-152; all parts stainless steel
    • Humidity: 95%
    • Transients / EMI: MIL-STD-9094; MIL-STD-461, 462
    • False alarm rate (catalogue): Less than 1 per km per 3 months
    • MTBF (sensor): 4.7 × 10⁸ h
    • MTTR: 30 min
    • Warranty: 10 years on the sensors

  5. Detection sequence

    1. Roof sensors: Strain-gauge strips lie under the tiles or roof panels.
    2. Pressure change: An intruder stepping onto a protected section changes the load.
    3. Processor: About 15 kg above the cover weight raises the alarm; dry contact or RS485 out.
    4. Control centre: The D-FENCE computerised control centre and D-Command Control are notified.

  6. Submittals

    Before installation, the contractor shall submit the manufacturer's datasheet, the installation instructions and the zone layout for approval.

Discuss your project.

Tell us the site, the threat and the line. D-FENCE engineers will propose the right barrier, sensor and platform, ready for your integrator.

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