Stability monitor
Leader SENTRY B2

Firefighter and USAR applications

Leader SENTRY laser allows to monitor the distance of the structure to be monitored during a fire, as well as during a rescue-clearance operation.

Accurate for optimal safety

Leader SENTRY detects a movement of 5 mm at a distance of 30 m. A telescopic sight can point accurately the unstable structure targeted.


Multiple maximum movement thresholds (from 5 to 100 mm) can be selected. When a movement is sensed that exceeds the selected threshold, the sound alarm is triggered (98 dB).
It continuously monitors detected movements and displays changes on its screen for real-time awareness.

Multiple monitoring

2 lasers can be connected to the device to simultaneously monitor 2 sides of an unstable building for the safety of rescue teams working around or inside the structure.
Product features
Technical sheet
Associated products


Leader SENTRY is a stability monitor that detects the structural movements of an unstable building. Its laser continuously monitors detected movements and displays
changes on its screen for real-time awareness.

Leader SENTRY can detect a 5 mm structure movement at a distance of 30 m! A telescopic sight helps to point the laser accurately at the targeted unstable structure.

It allows firefighters and USAR teams to be alerted by a visual and audio alarm (98dB) when a structure movement, however small, is detected.


Number of lasers
2 class 2 lasers equipped respectively with 4m and 20m of orange anti-abrasion cable
Number of tripods
2 robust tripods, height-adjustable to avoid interference with site activity (1.80m) with a built-in hook for attaching ballast at their centre
Number of ball joints
2 ball joint allowing tripod – laser connection.
Shockproof and waterproof (when closed) containing the
console control monitor
Dimensions (W x H x D)
670 x 510 x 372 cm
26.5 kg
Operating temperature
from -25°C to +50°C
Storage temperature
from -40°C to +70°C
Power supply
On mains with 110/220V 50/60 Hz transformer and international adapters
or on cigarette lighter socket (12V cable with adapter)
or with 16 AA alkaline batteries (emergency power supply)
Autonomy with emergency power supply
2 connected lasers: 9h with 8 AA lithium batteries (not supplied)
1 connected laser: 15.5h with 8 AA lithium batteries (not supplied)
2 connected lasers:3h with 8 AA alkaline batteries (supplied)
1 connected laser: 7h with 8 AA alkaline batteries (supplied)
6h (2 lasers) and 14h (1 laser) using the 2nd series of batteries (thanks to the 16 alkaline batteries supplied)


Product reference



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