Stop Guessing.
Start
Monitoring.
SnowSentry continuously monitors rooftop snow load pressure and sends automatic email alerts to your whole team when conditions cross a warning or danger threshold.
Roof collapses
are preventable.
According to a survey by Paramount Disaster Recovery, there are over 3,000 roof collapses each year in the U.S., resulting in more than 20 deaths and widespread business disruption.
Making the right call on snow removal and building safety requires real-time rooftop data. Without it, the same questions come up after every storm:
Knowing when and where to remove snow means safety and savings. SnowSentry answers both questions automatically, around the clock.
Without data, small problems
become expensive ones.
After every storm the same question: is it bad enough to call removal crews? Without sensors, you're reacting to damage instead of preventing it.
Know before
it's a problem.
The SSR-91 SnowSentry™ is a rooftop snow load monitoring system that measures actual snow pressure in real time. No guessing, no manual roof checks, no surprises.
Detect. Alert. Respond.
Three steps, running continuously all winter long.
Your entire roof at a glance.
Monitor every station, configure thresholds, and receive alerts from one live dashboard at app.2KRsystems.com.
Built for the real world.
Product dimensions & specifications.
| Dimensions |
41" × 41" × 1.8" (101.85cm × 101.85cm × 4.57cm) |
| Snow load capacity | 90 psf (439 kg/m²) |
| Weight | 55 lbs (25 kg) |
| Waterproof rating | IP68 |
| Dimensions | 6.95" L × 3" W × 0.9" H (17.65cm × 7.62cm × 2.3cm) |
| Pole height | 48” (121.92cm) |
| Power input | Solar powered or USB-C |
| Battery life | 60+ days operating without sunlight |
| Waterproof rating | IP67 |
| Operating temperature |
-22°F to +140°F (-30°C to +60°C) |
| Wind tolerance | 90+ MPH (145 km/h) |
| Data connectivity |
ISM 900 MHz 256-bit AES encryption |
Up and running same day.
No electricians, no drilling, no permits. Your own staff can deploy the full system and have live readings within hours.
Monitor what matters most.
There is no standard layout. Some customers deploy stations across their entire roof for complete coverage. Others focus on specific areas where snow accumulates fastest or the structure is most vulnerable. We work with you to design a configuration that fits your building. .
General Coverage
Stations distributed evenly across the full roof footprint, giving your team a complete picture of load conditions with no blind spots. Ideal for large flat or low-slope commercial roofs.
Level transitions between roof sections are prime spots for snow drift and accumulation, often concentrating load in ways that aren't visible from the ground.
Wall edges trap drifting snow and concentrate load along the roof perimeter, making them a critical area to monitor on many commercial buildings.
Rooftop equipment adds dead load to the structure before any snow falls. The geometry around it creates pockets where drifts accumulate on top of that existing load.
Areas with known structural weakness require the closest attention. Continuous pressure monitoring gives you an early warning system exactly where you need it most.
Ready to know
what's on
your roof?
Talk to the 2KR Systems team about the right configuration for your building. We'll help you determine station count, zone layout, and threshold settings before you buy.