Which fences is MicAlert designed for?

Rigid metal fences: palisade, ornamental, wrought iron, aluminum and welded metal fences. For chain link fences, RBtec recommends the IRONCLAD fence alarm system.

How long can one zone be?

Up to 1,000 ft (300 m) of sensor cable per zone as standard, or up to 500 m (1,640 ft) per zone with the extended option. Kits are supplied in 250 ft (75 m), 500 ft (150 m) and 1,000 ft (300 m) lengths. Dual-zone models (RB-MIC2Z250, RB-MIC2Z500 and RB-MIC2Z1000) monitor two zones from one LPU processor, up to 2,000 ft (600 m) per processor, or 1,000 m (3,280 ft) with the extended option.

How does MicAlert handle wind and vegetation?

Three layers of filtering: the detection algorithm responds to the sharp-frequency vibration of cutting and climbing and ignores low-frequency movement from weather; the processor adjusts its alarm threshold in real time with wind rejection; and sensitivity is set per zone (22 levels on the board, 500 via the optional software) to match the fence condition.

How does it connect to my alarm system?

Through dry-contact relays: 8 relays rated 1 A at 12 VDC, plus a tamper relay and a power-outage relay, so any alarm panel, DVR/NVR input or SCADA input can receive the alarm. Power is 12 to 24 VDC (300 mA at 12 VDC).

What is the warranty and enclosure rating?

Two-year warranty on the sensor cable. The LPU processor is housed in a NEMA 4X / IP66 enclosure rated for -40 °F to 221 °F (-40 °C to 105 °C).

MicAlert Microphonic Fence Sensor Cable

MicAlert is a microphonic sensor cable system for rigid metal fences. It detects the vibrations associated with attempted cutting or climbing and reports alarms through the connected security system. It is designed for outdoor rigid perimeters such as metal, palisade, ornamental, wrought iron and aluminum fences. It is sometimes called an alarm wire for fences: the sensor cable is the wire, attached to the fence itself. It operates by analyzing noise patterns to detect the sharp frequency vibrations specifically associated with forced entry attempts. To prevent nuisance alarms, the system employs three distinct layers of false alarm filtration, including real-time threshold adjustments and wind rejection, which effectively disregard low-frequency signals caused by weather conditions.

The MICALERT is designed as an affordable, “plug and play” solution that attaches directly to the fence without the need for protective conduits, specialized tools, or certified security technicians. The maintenance-free sensor cable comes with a two-year warranty, features a UV-rated coating for extreme weather protection, and offers 500 highly adjustable sensitivity levels to adapt to various environments and fence conditions. Highly versatile, it connects via dry contact relays to any standard alarm system or DVR, making it an ideal security solution for a wide range of locations including commercial areas, data centers, solar farms, gated communities, and equipment storage facilities.

MicAlert System Layout:

The microphonic cable comes pre-cut in 250 ft (75 m), 500 ft (152 m), or 1,000 ft (305 m) lengths.
Each LPU processor (analyzer) monitors up to two zones (two spools): models RB-MIC1Z250 / 2Z250, 1Z500 / 2Z500 and 1Z1000 / 2Z1000.
Each processor supports up to 2,000 ft (600 m) total, split across two zones of up to 1,000 ft (305 m) each. An extended option supports zones of up to 500 m (1,640 ft), for up to 1,000 m (3,280 ft) per processor.
Each kit includes an LPU processor in a weatherproof enclosure, plus the selected sensor cable length.
For larger perimeters, you can combine as many kits as needed.

How Does the MicAlert Fence Alarm System Detect Intruders

The system uses three layers of false-alarm filtering.

1. The detection algorithm is designed to detect only sharp frequency vibrations associated with intrusion attempts, while filtering out the low frequencies caused by weather conditions.

2. Automatic real-time alarm threshold adjustment with wind rejection.

3. 500 sensitivity levels are easily adjusted to adapt the sensor sensitivity to the fence condition.

Innovative Solutions for Every Need

Purpose built perimeter detection for the industries where a breach costs the most.
Explore how RBtec fits yours:

RBtec industry water treatment aerial view 4 3

Water Utilities

Water systems answer to AWIA risk assessments while running fences around plants, reservoirs and dozens of unmanned pump stations. RBtec gives each site type a standard zoned detection layer that reports back over the telemetry the system already runs.

Water Utilities

Aerial view of a high-voltage electrical substation with transmission lines and a fenced compound

Substations and Electrical Utilities

Substations are unmanned, spread across whole service territories, and increasingly targeted — from copper theft to sabotage. RBtec turns the station fence into a zoned detection layer reporting through existing SCADA, documented for CIP-014.

Substations and Electrical Utilities

Solar Farm

Copper theft crews can strip a solar site in one night, and insurers know it. RBtec turns kilometers of PV fence into zoned detection that catches the cut before the inverters are reached, with sensing that scales from one site to a whole portfolio.

Solar Farm

Aerial view of a self-storage facility with rows of storage units and a fenced perimeter

Self-Storage Facilities

Storage facility break-ins happen after hours, through or over the fence, while cameras record quietly. RBtec IRONCLAD turns the perimeter into an alarm zone on the burglar panel you already have, so response starts while the thief is still at the fence.

Self-Storage Facilities

Aerial view of a sea port with docked ships and container yards

Sea Ports & Terminals

Ports run long landside fences and a waterside that no fence can cover, under ISPS and MTSA obligations. RBtec covers both: zoned detection on the fence line and Marinet underwater detection where the intruder arrives by water.

Sea Ports & Terminals

Aerial view of a walled private country estate with a gated driveway and surrounding farmland

Private Estates & Residences

Large private properties have long, irregular boundaries — walls, hedges, gates and open ground — and no security team on site. RBtec detects an intruder at the boundary and reports where, before they reach the house.

Private Estates & Residences

Oil, Gas & Petrochemical

Refineries, terminals and tank farms run some of the longest fences in industry, often around hazardous areas where powered electronics cannot go. RBtec covers the distance with passive fiber sensing and keeps every active component safely outside the zone.

Oil, Gas & Petrochemical

Aerial view of a monitored border corridor with a patrol road

Military & Border Security

On a border or a base, the adversary plans around what they can see. RBtec buried fiber gives them nothing to plan against, and fence sensing, ground sensors and protected distribution close the layers above and behind it.

Military & Border Security

Aerial view of a distribution and fulfillment centre with a fenced trailer yard

Logistics & Distribution Centers

Cargo theft breaks records every year, and it starts at the fence around the trailer yard. RBtec turns that fence into a zoned alarm layer that satisfies TAPA FSR auditors and feeds the cameras your guards already watch.

Logistics & Distribution Centers

RBtec industry government campus aerial view 4 3

Government & Classified Networks

A classified network is only as secure as the cable runs between secure rooms. RBtec alarmed carrier PDS protects SIPRNet and other classified circuits between SCIFs and connected buildings, in line with CNSSI 7003 and without concrete encasement.

Government & Classified Networks

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Product Features

Ideal for installation on metal fences, including palisade, ornamental, wrought iron, and aluminum fences.
Plug-and-play kits, ready for fast installation at an affordable cost.
No conduit needed. The sensor cable attaches directly to the fence.
No training or special tools required. Includes a clear installation manual.
No certification required. Standard security technicians can install it.
Maintenance-free operation. Sensor cable includes a 2-year warranty.
500 sensitivity levels to match different environments, weather, and fence types.
Dry-contact relay outputs (NO/NC) connect to any alarm panel or DVR.