How it works: The system registers pressure changes in the terrain’s surface when it detects running, jumping, driving, etc.
Location: In all surface areas and underneath sand, grass, pebbles, paving, asphalt etc.
Length: From 10m to 400/800m (Stand Alone) / 12.8 Km (Multiplex). The detection strip is about 3 metres wide (6m with a particular configuration).
Alarm zone: Up to 4 zones (Stand Alone) / 64 zones (Multiplex).
Advantages:  Invisible and undetectable, unaffected by the weather and small animals. Works also in hilly terrain and in special applications (e.g. indoor). Low and inexpensive maintenance. Aesthetically pleasing.
GPS Plus, Ground Perimeter System, is the ideal solution for sites at high risk of intrusion.
GPS Plus is designed with DSP microprocessor technology (Digital Signal Processing). The signal from the sensor is digitized and analysed in time and frequency domains, providing extremely accurate processing.
In addition to high immunity to weather related interference, typical of the underground tube system, the sensor can also identify signals to be ignored, such as those with a repetitive frequency (rail, road with high traffic density, etc.) and only considers signals generated during the crossing of the sensititve area by intruders.
The system is passive and, therefore, not detectable.
GPS Plus is available in 2- and 4-tubes versions. Both versions are available in Stand-Alone and Multiplex.
The Stand-Alone version, 2- or 4- tube with DSP analyser for outdoor use, ensures maximum protection of 200mt per system.
Multiplex ensures maximum protection of 12.8 Km with a single perimeter control unit (MIND™). The architecture allows interconnection of up to 64 MIND units.
GPS Plus is based on the detection of a difference in pressure between two tubes laid down and buried along the perimeter to be protected, then filled with a liquid that allows operation even at low temperatures (antifreeze) and properly pressurized.
Crossing the sensitive strip generates a pressure difference in the tubes; this is detected by a special transducer and the signal thus obtained is analysed by the processor, which will identify the alarm conditions and send them to the control centre. The system can also store signals generated immediately before and after the event that can be reviewed later.
The ability to calibrate the sensitivity of each section independently allows the system to be adapted to the particular characteristics of each individual installation.
GPS Plus intelligent components are self-protected by a "watch dog" system; in case of shutdown, this will automatically restore normal operation.
This system can be combined with other protection systems (perimeter, indoor sensors, CCTV, access control, fire systems) and it can be centralized with flexible solutions for any requirement and application.
The system is divided into 3 main parts: the field, the DSP signal analyser and the central unit.
The field is of the "sensitive" part of the system and it can detect the events generated during a violation of the protected perimeter.
It includes: sensors, valves and tubes with the pressurized fluid, which, if placed in parallel at a distance of 1.2-1.5 mt, form a 3mt-wide sensitive strip for 2-tubes version, and about 6m for the 4-tubes version; this area is up to 200mt long (100mt each zone).
The DSP analyser processes the signals generated by sensors.
The central unit consists of the power supply unit, MIND unit and relay boards. MIND unit can handle up to 64 peripheral devices (analysers) connected on a single cable (data and power). The connection between the MIND and the peripherals is via a serial high-speed BUS (115,000 bps) and it can reach perimeter lengths of up to 5 km, without signal regeneration. MIND can handle a maximum of 16 different types of peripheral (GPSPLUS, PPS, RFC, DPS, DPP, SNAKE, WPS, TPSE and IPS). Using the relay boards alarms from sensors are made available via voltage-free relay contacts.
With the control software (MPX2000) it is possible to set system parameters, display the signals and store them in a file, for later analysis.
  • Signal processing in the time domain.
  • Signal processing in the frequency domain.
  • Combined frequency-time processing.
  • Use of masks to characterize and recognize signals sent by sensors.
  • Detection of signal energy levels (spectrum analysis).
  • Listing per category of signal energy matrixes.
  • 2 local inputs and 2 relay outputs available (underground version).
  • 8 local inputs and 8 relay outputs available (optional) in the outdoor analyser version.
  • Local recording, selfcalibration.
Coverage 400 mt. (SA)
12800 mt. (MPX)
Parameter Set-Up Local using PC
PC connection RS232 (SA)
Auxiliary alarm inputs 8 (SA)
8 (MPX) optional
Local relay outputs 8 (SA)
8 (MPX) optional
Cabinet Metal container (IP68)
Dimensions(LxHxP) 260x160x90 mm
Weight 2 kg.
Operating temperature -30° +70°C
Relative humidity 90{70e8a9b36feb2e2813015f53da132d522106a9b8ee730fd41874213a0084b8a5}
Power supply 10-16Vcc (12V nom.) SA
24-55Vcc (48V nom.) MPX
Current max. 220mA@12Vcc SA
60mA@48Vcc MPX
Invisible Dim.: 3 MB

Catalog Perimeter Security Dim.: 10 MB


Kit GPS Stand Alone

PGPS2002 PGPS2002
Analyser GPS Plus Multiplex

PGPS2002-I PGPS2002/I
Analyser GPS Plus Multiplex, buried version

PGPS2001-2 PGPS2001/2
GPS Plus sensor

Compensation valve

Buried Tube GPS

PUCP2117-A PUCP2117-A
Special cable for BUS connection, max connection distance is 3000 m

PUCP2114_B PUCP2114
Special cable for sensors connection

PUCP2117-B PUCP2117-B
Special cable for BUS connection, for connection distance over 3000 m


Manual pump

pgps197e PGPS197E
Electric pump

Selfpriming hand-carry motor pump

Stainless steel joint

Kit fixing clips


PCPS2002 PCPS2002
8IN 8OUT local card

Anti-freeze liquid