InvisiFence Plus

Unmatched Reliability, Invisible Fence

Fully Digital Buried Seismic Sensor Cable
The first and only fully digital buried seismic system for perimeter security. InvisiFence Plus creates an invisible fence around your property, one that's impossible to dig under or jump over without being detected.

InvisiFence Plus buried sensor

“One Buried Cable. A Fence Nothing Gets Past.”

A single sensor cable, buried along your perimeter, detects footsteps, digging, or vehicle movement the instant a threat crosses the line and passes the alert straight to your alarm system or VMS. No cameras to point, no fence to see, no gap for an intruder to find.

From Buried Cable to Verified Alert

How InvisiFence Plus's distributed sensor cable and HUB Unit detect and report intrusions along your entire perimeter.

Sensors

InvisiFence Plus combines a buried sensor cable with a HUB Unit. The sensor cable is buried roughly 40cm below the ground along your perimeter, with up to 38 smart seismic sensors connected per string.

InvisiFence Plus buried seismic sensor

Analysis

Each sensor includes its own DSP processor, running adaptive self-learning algorithms with an exceptionally high recognition level for diverse threats, locally, in real time, with no central bottleneck.

InvisiFence Plus sensor cable with distributed DSP processing

Detection

Upon detection, the system distinguishes between threat types above or below ground: footsteps, moving vehicles, digging, and more, so alerts arrive already classified.

InvisiFence Plus sensor detecting a perimeter intrusion

Alert

An alarm is triggered at the HUB Unit and passed on, via dry contact to your existing alarm system, or over TCP/IP to CCS-OnSite or your VMS.

InvisiFence Plus HUB Unit passing an alert to an alarm system

System Components

InvisiFence Plus is composed of a sensor cable with smart seismic sensors and a HUB Unit, with fully distributed sensing and processing.

Sensor Cable

A line of up to 38 smart seismic sensors, supplied at the length your site needs. Each sensor includes its own DSP chip that analyzes seismic signal locally, making InvisiFence Plus a fully digitally distributed sensor system. The cable includes 4 wires for DC power and an RS485 communication bus.

InvisiFence Plus sensor cable
InvisiFence Plus HUB Unit

HUB Unit

A HUB Unit sits on each section of the system. Single-sided HUB Units control a sensor cable line of up to 38 sensors; double-sided units control 2 lines of 38 sensors each, so larger perimeters scale without adding HUB hardware one-for-one.

Suitable For Any Perimeter

From small residences to long borders, InvisiFence Plus's modular design and independent section operation scale to critical infrastructure, solar farms, national borders, correctional facilities, and gated communities alike.

Critical Infrastructures

InvisiFence Plus protecting critical infrastructure

Solar Farms

InvisiFence Plus securing a solar farm perimeter

National Borders

InvisiFence Plus deployed along a national border

Correctional Facilities

InvisiFence Plus perimeter security at a correctional facility

Gated Communities

InvisiFence Plus protecting a gated community

Flexible Layout, Zero Blind Spots.

Suitable for small residences to long borders. Modular design and independent section operation ensure scalability and adaptability, with no single point of failure. InvisiFence Plus adapts to any site layout with ease, you can cut the digital sensor cable anywhere it's needed.

InvisiFence Plus continuous installation layout diagram

Continuous Installation

This layout provides a continuous virtual fence around the entire area of interest, ideal where an unbroken perimeter matters most.

InvisiFence Plus section installation layout diagram

Section Installation

Security coverage can be customized and adjusted according to specific site requirements, maintaining comprehensive protection while accommodating practical needs like risk analysis or budget limitations.

Either layout creates a virtual fence 6m (19.6ft) wide by 25m (82ft) deep, impossible to dig under or jump over without being detected.

Main Features

Built for reliable, low-maintenance detection in any environment.

Hard To Defeat

Underground and isolated, minimizing the risk of vandalism or cable cuts.

Plug & Play

Simple installation with easy, short training for your team.

Volumetric Detection

High level of protection, both above and underground.

Weather-Proof

Immune to weather conditions: rain, fog, wind, day and night.

No Line Of Sight Needed

Sensors feel the threat's vibrations directly, so they work in forestry areas too.

Flexible Layout

Can be installed in sections or continuously, according to site needs.

Built For Harsh Environments

MIL-STD-810G

Designed to meet military standards for robust performance in extreme conditions.

IP68 Rating

Fully sealed against dust and water for reliable buried operation.

-40°C to 85°C

-40°F to 185°F operating range, from arctic cold to desert heat.

Alert Options: Choose Your Operation Mode

Connect InvisiFence Plus to an existing alarm system, or run it stand-alone with SensoGuard's own command and control software.

InvisiFence Plus connecting to an existing alarm system via dry contact

Connecting To an Existing Alarm System

The sensor cable connects to your alarm system via the HUB Unit's dry contact outputs. Alerts are received directly through the alarm panel you already run, no new monitoring platform required.

InvisiFence Plus alarm management via CCS-OnSite Command and Control Software

Stand Alone: CCS-OnSite

Alarm management via CCS-OnSite Command & Control Software, with built-in integration with leading VMS platforms, for sites that want a complete, self-contained monitoring setup over TCP/IP.

Learn More About CCS-OnSite

Supported VMS Platforms

View the full integrations page →

Our Project Approach

From requirements to a fully operational perimeter, delivered by our engineering team

1

Requirements & Cost Analysis

We analyze your site's project requirements and costs to design the right configuration

2

System Preparation

The system is prepared and configured according to your site's exact layout

3

Installation, Testing & Training

Our team handles installation, testing support, and remote training for your staff

Why Underground Seismic Outperforms the Alternatives

Three technologies dominate perimeter protection today: underground seismic detection, fence-mounted sensors, and infrared (IR) beams. Here's how they compare.

CriteriaUnderground Seismic DetectionFence-Mounted SensorsIR Beams
Visibility to intruders Fully concealed, no visible hardwareVisible on the fence lineVisible posts and beam path
Requires an existing fence NoYesNo, but needs clear line of sight
Weather resistance Unaffected by rain, wind, or fogSensitive to wind-driven fence vibrationDegraded by fog, heavy rain, or snow
False alarm sources Minimal, filtered by adaptive algorithmsWind, animals, debris hitting the fenceBirds, foliage, dust, and beam misalignment
Terrain adaptability Works across open ground, slopes, and vegetationLimited to the fence line itselfRequires straight, unobstructed sightlines
Defeat resistance No wires to cut or panels to bypassCan be bridged or climbed between sensorsCan potentially be crawled under or jumped over
Maintenance Low, buried and self-containedModerate, tied to fence conditionModerate, requires beam alignment checks

Underground seismic detection is the only one of the three that requires no visible hardware and no existing fence to protect a perimeter. Read the full comparison →

Technical Details

Full specifications for every component in the InvisiFence Plus system.

InvisiFence Plus sensor cable

Detection Capabilities

Footsteps DetectionUp to 12m / 39ft radius
Vehicle DetectionUp to 25m / 82ft radius
Digging DetectionUp to 25m / 82ft radius
Virtual Fence Dimensions6m width x 25m depth

Communication

Maximum SensorsUp to 38 sensors per string
Bus CommunicationRS485

Environmental & Power

IP RatingIP68 (MIL-STD 810G)
Operating Temperature-40°C to 85°C / -40°F to 185°F
Power Supply12V (9 to 20VDC)
Power Consumption~15mW (1.3mA @ 12V)

Physical Specifications

Dimensions (Sensor)131mm x 50mm x 42mm / 5.1″ x 1.96″ x 1.65″
Dimensions (Spike)55mm / 2.16″
Weight (Each Sensor)115g / 0.2lbs
Installation Depth30-50cm / 11.8″-19.6″
InvisiFence Plus HUB Unit

With AI Bridge vs Without AI Bridge

SpecificationWith AI BridgeWithout AI Bridge
Communication InterfacesUSB Configuration CableTCP/IP
Maximum SensorsUp to 38 sensors
Alarm Output Options18 Dry Contacts18 Dry Contacts, TCP/IP
Camera/External Sensor Alarm Inputs6 Alarm Inputs
IP RatingIP67
Power Supply12V (9 to 20VDC) + PoE to AI Bridge12V (9 to 20VDC)
Operating Temperature-40°C to 85°C / -40°F to 185°F
Weight475g / 1.0lbs
Dimensions190mm x 150mm x 55mm / 7.4″ x 5.9″ x 2.1″

Secure Your Perimeter, Invisibly

Get a custom quote and see how InvisiFence Plus protects your site with buried, undetectable sensors

Frequently Asked Questions

InvisiFence Plus buried sensor InvisiFence Plus sensor cable

Have questions about InvisiFence Plus? Browse through our frequently asked questions to learn more about coverage, installation, weather resistance, and integration.

What is the coverage of the InvisiFence Plus virtual fence?

InvisiFence Plus creates a continuous virtual fence 6m (19.6ft) wide by 25m (82ft) deep along the buried sensor cable run, with up to 38 sensors connected per string over an RS485 bus. Each sensor is IP68 rated to MIL-STD-810G and operates from -40°C to 85°C (-40°F to 185°F), so the fence performs identically in desert heat, arctic cold, rain, or snow without recalibration. Power draw is low, around 15mW per sensor at 12V, which keeps long cable runs simple to power. Multiple Sensor Cable strings can be combined end-to-end, so InvisiFence Plus can secure anything from a single residential fence line to a multi-kilometer border, all without visible fencing or gaps an intruder can find and cross undetected.

How hard is it to install InvisiFence Plus? Do I need specific training?

InvisiFence Plus is designed to be straightforward to install. The system is supplied pre-configured and labeled according to your site's dimensions and layout, so a local integrator can lay and connect the cable without guesswork. SensoGuard also runs a remote training session, typically 1-2 hours, covering every aspect of installation, and once installed the sensor cable and HUB Unit require no ongoing maintenance.

Are there false alarms from nearby fences or metal objects?

No. InvisiFence Plus is not influenced by nearby fences or other metal objects, unlike buried coax-based systems that can pick up interference from nearby metalwork. Combined with the sensor cable's adaptive self-learning algorithms, which are tuned to recognize footsteps, digging, and vehicle signatures specifically, this keeps false alarms low without requiring a minimum clearance distance from existing fencing.

Does weather affect detection?

No, InvisiFence Plus is engineered for unattended, all-weather operation. Every sensor is IP68 rated to MIL-STD-810G and operates from -40°C to 85°C (-40°F to 185°F), so rain, wind, fog, snow, and extreme heat or cold don't affect detection. Because the sensors are fully buried rather than relying on a visible fence line or line-of-sight beam, InvisiFence Plus avoids the false-alarm sources that hurt fence-mounted and IR-beam systems most: wind-driven vibration, blowing debris, fog, and beam misalignment.

How is InvisiFence Plus protected from tampering or vandalism?

Every InvisiFence Plus sensor is fully buried underground, so there's no visible enclosure, junction box, or cable run above grade for an intruder to locate, cut, or bypass before the system has already detected them. Unlike fence-mounted sensors, which can be bridged or climbed between individual units, or IR beams, which can potentially be crawled under or jumped over, InvisiFence Plus has no exposed wires to cut and no surface panels to defeat. Because detection happens from concealed underground sensors, an intruder typically can't identify the system, let alone disable it, before triggering an alarm.

Can InvisiFence Plus connect to my existing alarm system or VMS?

Yes. The HUB Unit offers dry contact outputs (18 dry contacts) that connect directly to any existing alarm panel, so alerts are received through the system you already run. For sites without an existing alarm system, the HUB Unit's TCP/IP output pairs with SensoGuard's CCS-OnSite Command & Control software, which has built-in integration with leading VMS platforms including IDIS, NX Witness, Milestone, FLIR, Digifort, Axis, and mPrest, plus an open alarm API protocol for custom integrations.

Does InvisiFence Plus need main power, or does it run on batteries?

InvisiFence Plus operates from an external 12V DC power supply (9-20VDC) at the HUB Unit, or from a solar power system where mains power isn't available on site. Because each sensor draws only around 15mW at 12V, power requirements for the buried cable itself stay low even on long runs; the HUB Unit is the single point that needs a stable power connection.

Can I change the sensitivity or configuration after installation?

Yes. Sensitivity and configuration can be changed at any time after installation, on any individual sensor or across the whole line, without re-digging the cable. All settings, including per-sensor sensitivity adjustment, are controlled from the HUB Unit, so a site can be re-tuned as conditions change (new vegetation, nearby construction, a change in what the site needs to detect) without a truck roll to physically access buried hardware.

See InvisiFence Plus in Action

Watch how the buried sensor cable installs and protects a perimeter without visible hardware.

Video coming soon

Technical Documents

Download detailed specifications for InvisiFence Plus's sensor cable and HUB Unit.

Technical Specification

PDF Document