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Products / Tension Fence Detection

MAX1000 Tension Fence Detection System

A physical barrier and intrusion detector in one. Tensioned wire lines with mechanical sensor posts deliver very high probability of detection (PD) with an extremely low nuisance alarm rate (NAR) — with no climate calibration, ever.

CE — EMC Directive 2014/30/EU FCC Part 15B Verified IP68 (tested per IEC 60529)

How It Works

Each detection zone consists of horizontally tensioned wire lines (spacing typically 9–20 cm, zone length typically up to 60 m) strung between anchor posts. Sensor posts mounted between the anchors each carry mechanical transducers, and every transducer monitors the two adjacent wire lines.

Pulling, cutting or spreading the wires unbalances the tension array and raises an alarm. Because the wires are closely spaced, an intruder cannot pass through without detection. Sensors are grouped into up to 6 alarm groups per post column (bottom / middle / top), so the control room sees where on the fence the attempt is happening — and climb attempts can be distinguished from other disturbance types.

The sensors are purely mechanical with a self-compensating mechanism: soil movement, temperature swings and adjacent RF transmitters cause no drift. Install on wall tops, free-standing fence lines, or at 45° outriggers over an existing fence.

Key Features

  • Fixed sensitivity — no recalibration across seasons or climates
  • Triggers at 15–30 kg of applied force or above
  • Nuisance alarms: maximum 1 event per km per 3 months
  • Immune to wind, rain, ice, snow, dust, UV and EMI/RFI
  • Redundant array — virtually no single point of failure
  • Up to 6 alarm groups for climb-vs-cut discrimination
  • Small-animal filtering keeps the alarm queue clean
  • Ideal for critical infrastructure: nuclear, airports, energy, custody
MAX1000 tension detection array on a wall top
Wall-top installation: tensioned wire array with sensor posts and processor housing.
MAX1000 posts at a power plant perimeter
Reference installation at a power generation facility.

Technical Specifications

SensitivityFixed, unaffected by climatic conditions
Trigger force15–30 kg applied force or above
Nuisance alarm rate≤ 1 event per kilometer per 3 months
Wire spacing / zone lengthTypically 9–20 cm spacing; zone length typically up to 60 m
Alarm groupsUp to 6 groups per post column (bottom / middle / top)
Intrusion outputDry contact, normally open, 0.1 A @ 24 V
Tamper outputDry contact, normally closed, 0.1 A @ 50 V
Operating temperature-40 °C to +70 °C
HumidityUp to 95% RH, non-condensing
Environmental immunityWind, rain, ice, hail, snow, dust, temperature change, UV — no maintenance required; suitable for desert, storm-exposed, tropical and sub-zero sites
Ingress protectionIP68 housing (tested per IEC 60529 / GB/T 4208)
ModelsMAX1000-001 / MAX1000-002
ComplianceCE — EMC Directive 2014/30/EU (EN 55032:2015, EN 55035:2017); FCC Part 15 Subpart B (ANSI C63.4:2014)
Declarations of Conformity and full test reports are available on request — see the Certifications page.

Get the MAX1000 datasheet & quotation

Download the datasheet below, or send us your fence layout for a system proposal.

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