DualSentry
The DualSentry series of Distributed Acoustic Sensors (DAS) are optimised for Perimeter Intrusion Detection (PIDS) and provide detection and location of intrusion events with minimal nuisance events and false alarms.
The solution is designed to provide comprehensive coverage for high-security sites, offering simultaneous detection above and below ground from a single cable. Offered at a highly competitive price point against alternative technologies, Bandweaver is bringing the power of fiber optic sensing technology to a broader market. This new variant has been developed for any sized site where pinpoint accuracy is needed to quickly identify and locate a perimeter breach and enable security teams to respond accordingly.
FEATURES
Resistance to Cable Cut & Sabotage
Bandweaver’s DualSentry is dual channel, with each channel monitoring up to 10 km of cable. When used in a loop configuration, the 2-channel variant will continue to provide uninterrupted detection along the perimeter. This remains true even if the cable is cut or damaged.
Minimising Nuisance Alarms
Our market-leading detection algorithms are able to develop an acoustic fingerprint of different events, enabling the distinction between genuine security risks and extraneous environmental noise.
Location Accuracy
Advanced signal processing technology combined with intelligent algorithms enables fast and accurate identification of the specific location of a potential threat to within ±2 m.
Lower Cost of Ownership
Overall reduced cost of installation and maintenance when compared with alternative technologies, plus no power or communications infrastructure needed in the field.
Integration
MaxView integrated monitoring platform is capable of seamlessly integrating DualSentry with a wide variety of commonly used 3rd-party systems, giving operational teams real-time information from a range of devices via a single interface. In addition, DualSentry has 20 onboard relays for hardware interfacing.
Multiple Fence Types
Due to its unique configuration capabilities, DualSentry is suitable for a wider variety of fence and wall types without compromising location accuracy.
Combined Fence and Buried
DualSentry can operate in fence/wall-mounted and buried scenarios using the same channel. This means there is no need to purchase multiple units or run separate cables to cover each application, enabling large cost savings.
Artificial Intelligence
Some of the key detection algorithms utilise advanced machine learning in order to improve detection and reduce nuisance alarms even further.
BENEFITS
- Location of events to within 2 m
- Based on a single fiber optic sensing cable. No individual sensors, no metal or moving parts
- Robust and reliable instrumentation with no moving parts (fan-free) and utilising high-reliability telecom components
- Ability to react to the precise location of an event for rapid action and effective troubleshooting
- Easy to install and low cost of ownership with low ongoing maintenance costs.
APPLICATIONS
DualSentry is a very versatile technology and can be deployed across multiple applications. These include:
- Perimeter Intrusion Detection
- Pipeline security
- Conveyor belt condition monitoring
- Power cable integrity
- Telecoms infrastructure monitoring
- Rail and road monitoring
HOW IT WORKS
The Distributed Acoustic Sensor (DAS) measures the temperature along the fiber optic cable using a technique called Coherent Optical Time Domain Reflectometry (COTDR). The distributed acoustic sensor rapidly sends laser pulses into the fiber optic and measures the reflected light from the optical fiber sensing cable. The COTDR system returned a scattered signal that is mixed with a local oscillator and then filtered. By analysing the returned light at the Rayleigh frequencies, the distributed acoustic sensing system is able to create a distributed acoustic (or vibration) measurement along the entire length of the fiber, effectively turning the telecoms cable into a continuous series of microphones.
SYSTEM INTEGRATION
The Maxview Advantage
The DualSentry system has an extremely flexible system architecture, enabling it to integrate either
with Bandweaver’s Maxview SCADA software or with any 3rd-party control systems.
With the loose coupling architecture of Maxview, it can integrate multiple systems across multiple
sites with one coherent, customisable, easy-to-install, user-friendly interface
INTRUSION DETECTION
Bandweaver utilises Perimeter Intrusion Detection Systems (PIDS) to ensure that organisations are fully secure and to help reduce operational risk.
With ever-increasing threat levels, it is important that organisations properly secure their assets. This starts at the perimeter of their sites, where there has never been a more important time to deploy robust, reliable and secure detection strategies to mitigate operational risk.
Prompt and highly accurate location information of a would-be intruder ensures a fast and appropriate response to minimise any loss. Ensuring that your perimeter intrusion detection system is fully integrated into your security solution provides real-time data. Therefore, creating the ability to track and respond to intruders.
Fiber optic technology is fast becoming the technology of choice. Especially for those organisations looking to deploy a cost-effective, reliable solution with a significantly lower full life cost of ownership.
Bandweaver’s advanced range of fiber optic intrusion detection solutions provides both covert buried and fence- or wall-mounted detection capabilities from a single detection unit. With fully scalable systems for sites less than 5 km to more than 100 km, Bandweaver has the solution for you.
Sectors
POWER & UTILITIES
BUILDINGS AND FACILITIES
TRANSPORTATION
LAW ENFORCEMENT
OIL & GAS
IT & TELECOMS
Case Studies
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FREQUENTLY ASKED QUESTIONS
Product Overview & Technical Capabilities
What types of threats can DualSentry detect?
DualSentry can categorise events into Mechanical digging, manual digging, vehicles and personnel walking near or on the protected boundary. Other user or project specific algorithms can also potentially be configured.
Is DualSentry visible to intruders?
When installed underground, it is completely covert. Fence installations use a discreet fiber optic cable, which can be low-visibility or brightly marked if deterrence is desired.
What makes DualSentry different from other intrusion detection systems?
It uses advanced signal processing to distinguish between real intrusion attempts and environmental noise, reducing false alarms.
How long a perimeter can DualSentry protect?
Up to 20 km with a single controller (10km in either direction on each of the channels).
What is the detection accuracy?
Depending on the configuration this typically is the range of 2-5m from the event.
Does it work in all weather conditions?
Yes – when buried it is unaffected by rain, snow, fog, extreme temperatures, or electromagnetic interference. When mounted on fence or walls, environmental algorithms can be used to minimize nuisance alerts due to wind or rain.
Can it integrate with CCTV?
Yes – alarm zones can automatically cue cameras to the point of intrusion through the DASCM software. More advanced integration can be carried out with VMS/PSIM through MaxView
Can the system detect multiple, simultaneous events along the cable length?
Yes, the technology does not have limitations in detecting multiple events along the length at the same time.
Does the system use artificial intelligence?
Yes, the DASCM has machine learning capabilities for some of the detection algorithms that can be used to
Does it require power in the field?
No – the sensing cable is completely passive; power is only needed at the control unit.
What is the difference between FenceSentry and DualSentry?
The main differences are that DualSentry can be mounted on both walls and can be buried. When it is buried it can provide event classification in addition.
What is the difference between Horizon DAS and DualSentry?
Horizon DAS is a longer range system and can detect upto 50km per channel (upto 100km per system) whereas DualSentry can detect upto 10km per channel (upto 20km per system)
Installation & Integration
Can DualSentry be retrofitted to an existing fence?
Yes – it can be attached to most chain link, palisade, or welded mesh fences without major modifications.
How is the buried cable installed?
In a narrow trench, typically 20–30 cm deep, using ploughing or trenching machines.
Can the same cable be used for both fence and buried detection?
Yes – a single continuous cable can transition between fence-mounted and buried zones.
What is the typical installation time?
Varies by site; approx. 1–2 km per day for fence installs, 3–5 km per day for buried installs.
Is the system scalable?
Yes – additional zones or lengths can be added as required.
What interfaces does it support?
TCP/IP, dry contacts, Modbus, SNMP, and ONVIF for VMS integration.
Can the system be monitored remotely?
Yes – via Bandweaver’s MaxView software or customer’s existing security platform.
Commercial & Support
What is the typical warranty period?
Standard 2 years, extendable up to 5 years with a service agreement.
How long does the cable last?
Fiber optic sensing cables have a lifespan of 25+ years under normal conditions.
What maintenance is required?
Minimal – periodic system checks and cleaning of terminations.
Is training available for operators?
Yes – Bandweaver offers remote and on-site training for installers and end users.