Leader SENTRY B2 Structural movement telemeter
- Movement Accuracy: Plus-minus 2 mm
- Maximum Range: 50 meters
- Audible Alarm: 105 decibels
- Wireless Range: 100 meters
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Description
Revolutionary Laser Telemeter for Fire Rescue Safety
The Leader SENTRY B2 Structural Movement Telemeter, frequently referred to as the LEADER SENTRY WIRELESS, stands as a critical and transformative safety innovation for Fire and Rescue Services and Urban Search and Rescue (USAR) teams across the globe. This device is a portable and autonomous stability controller, specifically engineered to continuously detect the slightest structural movements or shifts in unstable buildings and objects from a safe standoff distance. By utilizing a high-precision, non-contact laser system, the SENTRY B2 effectively acts as an immediate early warning system, alerting personnel before a dangerous structural move or an imminent collapse can occur. The product’s core mission is the rapid creation of reliable safe zones and secured working conditions for first responders operating in extremely volatile environments, replacing traditional, often unreliable, and time-consuming manual monitoring methods. The deployment of the telemeter establishes a vital safety protocol, increasingly mandatory in complex emergency scenarios , allowing crews to prioritize their rescue efforts with the confidence that they will receive an instantaneous alert if danger arises. Designed with a strong emphasis on robustness and intuitive ergonomics , the SENTRY B2 is compact and lightweight, with the laser unit and tripod weighing a total of just 3.8 kilograms. This intentional design ensures maximum efficiency and rapid deployment, key factors when every second counts during the initial response phase of any incident. Its continuous, real-time distance display on a clear OLED screen ensures that the operating crew maintains constant awareness of the structure’s integrity.
Unmatched Structural Movement Detection and Precision Range
The foundation of the SENTRY B2’s reliability is its exceptional detection sensitivity and long-range measuring capabilities, which provide maximum protection for crews. The telemeter is capable of detecting a minimal structural movement with an impressive accuracy of plus or minus 2 mm, confirming its status as a professional-grade precision tool. This level of precision is maintained even when the unit is positioned up to a maximum range of 50 meters away from the target structure. This substantial operating distance allows safety officers to monitor the most compromised areas from a secure perimeter, significantly reducing the exposure of personnel to immediate danger. For accurate targeting, the unit is fitted with a specialized telescopic sight. This sight includes a 2.5x/10x focus and a 40 mm objective lens, enabling the rescuer to precisely pinpoint the exact spot on the unstable object—a crucial detail for reliable, targeted monitoring in a cluttered disaster scene. Once monitoring is established, the operator can select one of seven different movement thresholds (2, 5, 10, 20, 40, 70, and 100 mm). This capability allows the threshold to be tailored to the specific risk level of the emergency and the type of structure, ensuring that the alarm only triggers when the movement exceeds the pre-set danger level, thereby minimizing disruptions from non-critical shifts. The laser itself is engineered to be harmless and features smart filtering software to ignore momentary interruptions of the beam—such as a bird or a passing person—effectively preventing false alarms and maintaining uninterrupted monitoring.
Critical Audio Visual Alarms Ensure Rapid Evacuation
When a movement exceeding the pre-set threshold is sensed, the SENTRY B2 instantly activates a robust and powerful dual-alert system designed to ensure all crew members receive the warning without fail. The audible alarm is exceptionally loud, rated at 105 dB (decibels) , a volume specifically engineered to penetrate the high-noise environment of an emergency scene, overriding the sound of machinery, breaking debris, or other operational noise. Simultaneous to the siren, the unit triggers a powerful visual alert: three white flash blinking beacons, each delivering 100 Lumens of light, providing an unmistakable 360-degree visibility. This visual component is indispensable in low-light, smoky, or dusty conditions where an audible warning might be less effective. For tactical scenarios that demand silence, the system is designed to allow the operator to deactivate the audible alarm (mute the siren), while the highly visible flash beacons remain active and ready to alert the crew visually. This mute function ensures safety is maintained without compromising covert operational needs. Further enhancing command and control, an optional wireless remote control is available. This remote unit, held by a safety supervisor, integrates its own 80 dB alarm and provides the capability to voluntarily activate the main siren from a distance , enabling a supervisor to issue an immediate, system-wide evacuation order, which is a key element of comprehensive safety management.
Advanced Wireless Network Simplifies Complex Scene Monitoring
The “WIRELESS” designation in the Leader SENTRY B2 is a core tactical advantage, enabling advanced, multi-point monitoring capabilities in complex scenarios. The system supports the wireless connection of two separate laser telemeter units (known as the SENTRY DOUBLE model). These units communicate securely over a range of up to 100 meters using robust 2.4 GHz Zigbee technology. This dual-unit synchronization is critical for effective two-dimensional (2D) structural monitoring, allowing rescuers to place lasers on two different sides of a large or unstable building to track movements across multiple axes simultaneously. This capability provides a much more complete and safer assessment of the structural integrity than a single-point monitor could achieve. The wireless connection also facilitates centralized management; the operator can manage and configure both laser units from either physical SENTRY box. The optional wireless remote control simplifies field management even further, allowing a safety officer to control both units from up to 100 meters away. The remote is powered by long-lasting dry cell batteries (6x AA alkaline) for an impressive run time of 55 hours. Critically, the main unit’s OLED display is capable of showing the real-time status and distance readings of both connected lasers simultaneously , alongside the battery level and wireless connection quality for each, ensuring the operator has complete situational awareness of the entire monitoring network’s health and data.
Purpose-Built Design Withstands Harshest Emergency Environments
Designed and manufactured in France , the Leader SENTRY B2 is built to the stringent quality requirements of international Fire and Rescue operations, ensuring reliability in the most hostile environments. The physical build is designed to be robust and withstand the inevitable challenges of field use. Evidence of its toughness is provided by its successful certification after a rigorous 2-meter drop test onto concrete, confirming its shockproof resilience against accidental falls and rough handling at incident scenes. The unit is constructed from High Impact resistant thermoplastic elastomer, a durable composite material that offers protection from physical damage. Furthermore, the telemeter carries an IP55 Ingress Protection rating , which guarantees reliable operation in all weather conditions, protecting the sophisticated electronics from dust and low-pressure water jets from any direction. Beyond durability, the design focuses on intuitive ergonomics : the control buttons are specifically oversized and positioned for easy operation even when the user is wearing heavy rescue gloves. The included telescopic tripod can extend up to 1.8 meters and is equipped with a versatile ball-joint mount to allow the laser head to be aimed precisely at any target angle. For operations on uneven or compromised terrain, the tripod also integrates a hook to allow for hanging a ballast, such as sandbags, thus maximizing stability and ensuring the highest possible accuracy of the distance measurement.
Unrivaled Power Versatility for Global Disaster Deployment
The power system of the Leader SENTRY B2 is engineered with the logistical reality of international disaster response teams (such as USAR and INSARAG) as a primary consideration. The use of standard, easily sourced 12x 1.5V AAA type alkaline dry cell batteries for its primary power source provides a reliable 6-hour run time. Crucially, the deliberate choice of dry cells over Lithium-ion batteries was made to eliminate the heavy air transportation constraints (complex declaration and logistics) that Lithium batteries impose. This allows international rescue teams to easily transport the SENTRY B2 equipment on planes, ensuring rapid deployment upon landing in any foreign or disaster-stricken country. The dry cell batteries are also easily found and replaced virtually anywhere in the world, even on catastrophe scenes where standard power may be unavailable. For long-duration monitoring missions, the system supports an optional External NiMH rechargeable battery , which is also a non-Lithium technology, maintaining the air travel advantage. This external unit provides a massive extended run time of up to 45 hours. In addition to battery options, the SENTRY B2 comes standard with a versatile 110/240V mains power supply transformer with international adaptors, and a seamlessly combined 12/24V cable adaptor. This allows the unit to be continuously powered by a vehicle’s cigar lighter plug during extended field operations. This comprehensive, versatile power strategy ensures that the SENTRY B2 is always ready to operate, regardless of location or the length of the mission.
Essential Tool for Diverse Rescue Operations and Safety Protocols
The Leader SENTRY B2 is purpose-built to provide crucial safety support across a diverse array of high-risk emergency scenarios, ensuring maximum protection for personnel working in compromised areas. The telemeter’s capacity for non-contact distance monitoring is indispensable in numerous contexts, including: Structural Fires, where weakened building elements risk unpredictable collapse during fire attack, search, or overhaul phases. Road Traffic Collisions, particularly those requiring heavy rescue operations where nearby vehicles or infrastructure may be unstable. Trench Rescues, where monitoring the minute, yet dangerous, movements of the Shoring Systems is critical to prevent trench wall failure. Following natural disasters or explosions, it is vital for establishing secure perimeters around Collapsed and Partly Collapsed Structures encountered by USAR teams. The system is also deployed during Internal Breach Operations and when inspecting Fragile Structures that have been compromised by fire or flood damage, providing an essential, constant check on structural stability. The ability of the SENTRY DOUBLE model to wirelessly connect two laser units up to 100 meters apart is highly valuable for providing comprehensive 2D monitoring of large, unstable facilities, delivering a complete picture of the structural movement dynamics. By providing an instantaneous, 105 dB alert the moment a threshold is breached , the SENTRY B2 gives crews the precious time they need to evacuate, thus enforcing essential safety protocols globally.
Acquire Guaranteed Quality from the Top Online Supplier
For all Fire, Rescue, and USAR teams seeking to acquire this indispensable safety equipment, the tpt24 online store is unequivocally the foremost online retailer of the Leader SENTRY B2 Structural Movement Telemeter across the globe. TPT24 is dedicated to ensuring that this critical safety technology is available to emergency responders in every country worldwide. The store stands by its product delivery with a stringent guarantee of authenticity and quality, ensuring that every SENTRY B2 unit received meets the demanding manufacturer specifications, including its IP55 weather resistance rating , 2-meter drop resilience , and its precision plus or minus 2 mm accuracy. By choosing TPT24, customers are guaranteed to receive the authentic, French-manufactured product with its key advantages intact, such as the logistics-friendly dry-cell battery design that facilitates unrestricted air travel for international deployment. Leveraging a robust and efficient global logistics network, tpt24 ensures the secure and timely delivery of the Leader SENTRY B2 directly to you, in any country across the world, ready for immediate integration into your highest-priority safety protocols. TPT24 is your reliable global partner, committed to supporting rescue personnel with the most advanced, high-performance monitoring technology available.
Specifications
| Feature Name | Specification Value | Details |
| Monitoring Method | Telemeter Laser Beam | Detects difference in distance from the pointed structure.
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| Accuracy Standard | Plus-minus 2 mm | Precision of the movement measurement.
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| Maximum Range | 50 meters | Maximum effective standoff distance to the target structure.
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| Detection Thresholds | 7 Settings | Selectable thresholds: 2, 5, 10, 20, 40, 70, 100 mm.
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| Audible Alarm | 105 dB (Decibels) | Powerful siren volume to alert the crew.
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| Visual Alarm | 3x 100 Lumens | White flash lights providing 360-degree visibility.
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| Wireless Connection | 2.4GHz Zigbee | Links two lasers together for 2D monitoring.
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| Wireless Range | 100 meters | Maximum communication distance between two laser units.
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| Ingress Protection | IP55 Rated | Protection against dust and low-pressure water jets.
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| Drop Resistance | 2m onto Concrete | Verified resistance to rough handling and accidental drops.
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| Power Source (Standard) | 12x 1.5V AAA Cells | Alkaline dry cell batteries provide 6-hour run time.
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| Power Source (Extended) | NiMH Rechargeable | External battery provides up to 45 hours run time.
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| Operating Temperature | -10 to +50 degrees C | Wide operating temperature range for the laser unit.
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| Total Deployment Weight | 3.8 kg | Total weight including the laser head and standard tripod. |











