Flexible settings depending on the threat
Wire deflection on the Guard Tower matrix wire array electric fencing creates an alarm condition. Adjustable detection sensitivity allows any combination of alarm, low voltage or NLEF modes, depending on threat level or time of day. Plus, mode settings of the zones can vary vertically (high and low wire arrays) or horizontally (different sections of perimeter).
Alarm Only Mode
- detects wire deflection in any direction
- detects cut wire
- creates alarm only – no voltage on wire array
Low Voltage Mode (12 volt DC)
- detects wire deflection in any direction
- detects wire that is cut, grounded, or touching an adjacent wire
- creates alarm
NLEF Mode (high voltage – 5,000 volts)
- detects wire deflection in any direction
- detects wire that is cut, grounded, or touching an adjacent wire
- detects a “grounded” intruder/escapee touching the wire while standing or touching two adjacent wires simultaneously
- creates alarm and non-lethal shock of 5,000 volts that pulse in 1-second intervals
Note: the wire array can be set as alarm only mode on lower zone(s) and NLEF mode on top wires
How It Works
Each of Guard Tower’s electronic identification circuit boards is a smart sensing device that sends a signal indicating where a breach in the electric fence has occurred.
The Guard Tower’s reliable smart sensing device detects wire movement in any direction, including in or out, side to side, or wire spread caused by climbing the electric fence. It also detects cut wire or a severed communication link. The electric fence sensitivity can be adjusted up or down as needed.
The Guard Tower’s flexible mounting configuration allows it to be installed as a standalone barrier or mounted to existing fences, including wood, chain link, or wrought iron.
Frequently Asked Questions regarding these Electric Fencing Systems
Question: Is the electric fence system safe?
Answer: Yes, the energiser components system design, and installation, comply with product standards (BS EN61011) and our own code of practice that exceeds installation codes of practice which currently exist in the UK and around the world.
Question: What is BS EN 60335-2-76:1999?
Answer: BS EN 60335-2-76:1999 is the European Standard for Electric Fence energisers and their safe application. This standard has been adopted by most European Countries. In 1993 the British standards adopted EN 61011 in its entirety as the British standards BS EN 60335-2-76:1999.
Question: What are the basic requirements of BS EN 60335-2-76:1999 and PAS 47 PART ( BS 1722 pending )
Answer: The maximum energy that can be produced by the security system energiser, is limited by design to a maximum of five joules into a load of 500 ohms ( typical resistance of human body ).
The energiser is designed and required to comply with this output, even under abnormal operating conditions such as component failure. The overall system is specified with due consideration given to the duty of care associated with such systems. This includes clearances, numbers of wires, the use of warning signs, etc. The energiser is designed to be fail safe. The system is constructed with due consideration for duty of care. Warning signs are applied at appropriate intervals.
Question: Are SIMTEC energisers as used with the Electric Fencing Systems tested compliant with BS EN 60335-2-76:1999?
Answer: Yes.
Question: What happens if a child or elderly person comes into contact with the electric fencing?
Answer: In accordance with the Code of Practice and minimum Quality Standards, all systems are designed and installed to minimise the risk of accidental contact, with all ages and infirmity considered
The impulses are regulated safe for the entire population, in accordance with BS EN 60335-2-76:1999.
Question: What are SIMTEC’s Code of Practice and Minimum Quality Standards?
Answer: As responsible manufacturers and distributors of Pulsed Fence Systems we have a policy of only making the systems available from trained Dealers.
All Dealers have an agreement in which they commit only to design, install and maintain Pulsed Fenced Systems in accordance with SIMTEC’s Code of Practice and Minimum Quality Standards.
The standards meet and exceed the requirements of all National and International standards regarding safety and the application of electric fence systems.
Question: How do SIMTEC ensure that their Code of Practice and Minimum Quality Standards are complied with?
Answer: Installations are inspected at regular intervals by SIMTEC.
Question: Is the system legal?
Answer: Yes, the system is legal because the system design, components and installation comply with the requirements of BS EN 60335-2-76:1999.
In addition, the system is only available from trained dealers, who exercise ‘Duty of Care’, when considering the design, installation and maintenance of Pulsed Fence systems in accordance with SIMTEC’s Code of Practice and Minimum Quality Standards.
Question: What maintenance is required?
Answer: We recommend two routine maintenance inspections per year to ensure optimum system performance and reliability with a minimum of one visit per year.
Question: Is the system prone to false alarms due to changes in the weather, heavy rain, fog, snow, high winds, falling leaves, wet paper bags, wild animals, etc.?
Answer: No, unlike other perimeter systems Pulsed Fence technology and signal processing ignores these forms of interference.
Question: Why does the system not generate an alarm if an animal or human touches the pulsed wires?
Answer: Anyone who touches the system, when it is armed, is repelled by a short, sharp, painful but regulated safe electric shock.
Only if someone attacks, tries to climb through or tampers with the system, are alarms generated.
Question: What about false alarms?
Answer: False alarms are virtually unheard of because of the system quality and proven design. Unique patented electronics and system components. Designed, installed and maintained by trained Dealers. SIMTEC’s Code of Practice, Minimum Quality Standards and system inspection.
Question: What happens if the mains fail?
Answer: All our systems have standby power supplies. In the event of mains failure rechargeable batteries power the system for a minimum of 4 hours. If a longer period is required the size of the standby power supplies can be increased.
Question: What are the running costs of a typical Pulsed Fence system?
Answer: A standard I.P. system consumes less than 40 watts fully armed. This is comparable with a small light bulb.
Question: Is the system compatible with other security systems and equipment?
Answer: Yes, in its standard form it can be installed as a stand-alone system or directly interfaced with any other type of intruder alarm, access control or integrated security system. This is for all functions including arming, disarming, alarm monitoring and signalling.
Question: Can gates be protected?
Answer: Yes, all forms of security opening, sliding and power gates can be fully protected with the SIMTEC system.
Question: Is it possible for the system to be on and monitor the perimeter security without the high voltage feature?
Answer: Yes, SIMTEC have a fully monitored HV/LV system for the protection of storage yards, car parks and sites such as garden centres and factories, where authorised people can be exposed to the system without the risk of the high voltage feature. During the daytime the system is fully monitored using a unique LV system. When the premises are vacated the system can be armed with the additional feature of the high voltage deterrent.
Question: Is the system zoned for alarm management and response?
Answer: Yes, the standard European Pulsed system has a minimum of 6 zones for alarm management and monitoring purposes. These zones can be configured to meet with the exact site requirements, i.e. programmable delayed zones for exit entry routes, gates, etc. and instant zones for standard perimeter protection. The system may be expanded to multiple zones and PC interfaced.
Question: What is a maximum electrical zone length?
Answer: On a standard fence system, each zone may be up to 300 metres long. Therefore, a standard 6 zone control may be used for the protection of perimeter fencing from zero to 1.5 kilometres in length.
Question: Can the system be used in conjunction with CCTV, security lighting and other alarm monitoring or annunciation?
Answer: Yes, the zone alarm outputs can be used to trigger or operate all forms of alarm monitoring, annunciation or signalling systems.
Question: What is the authorities attitude to electric security fences?
Answer: SIMTEC directors have held discussions with the Home Office and Crime Prevention Officers throughout the various regions. Many electric fence installations are as a direct result of police referral and Government request!
Question: Do insurers accept or specify the fence system?
Answer: Yes, most major insurance companies accept the installation of I.P. systems and some are now specifying the same for the protection of appropriate sites.
As a direct result of I.P. fences stopping crime and losses on various sites, some site owners have been able to obtain insurance on previously uninsurable or uneconomic risks.
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