SOS tracking
Last fix and context when phone GPS drops; SOS with direct traceability on the map.
STATUS: ACTIVE
Prysma SentinelSystem online
Mission-critical · Planetary reach · Zero compromise
Full visibility where GPS alone stops working.
From mines and jungle to the edge of the void: one tactical pane for your fleet, contextual SOS, and links that do not depend on the carrier. Elite engineering for teams that cannot afford to go dark.
- Mesh & low-frequency paths
- SOS with context
- Live in minutes
Industrial-grade technology
- LoRaWAN protocol
- AES-256 encryption
- Mapbox engine
01
Multi-tenant, isolated per company
02
Near-real-time map and streaming
03
Built for incidents and operational continuity
System modules
Mission-critical capabilities on the tactical pane: visibility, alerts, traceability, and governance.
Geofence alerts
Map perimeters and alerts when a unit enters or exits critical zones.
STATUS: ACTIVE
Reporting
Unified history, fast post-incident review, and export for audit trails.
STATUS: ACTIVE
Security
Strong on-device encryption, multi-tenant isolation, and auditable role access.
STATUS: ACTIVE
Transparent CAPEX
Hardware ecosystem
The product has a physical edge: field nodes and a border gateway. One-time acquisition prices are published here; the SaaS subscription covers the platform, map, and ongoing operations.
NodeSentinel Node V4
Heltec V4, LoRa SX1262 radio, L76K GPS, ~3500 mAh battery — built for mobile operators.
What it’s for
- Operator tracking and last position on the map
- Manual SOS with context for the operations center
- Geofence alerts and mission telemetry
One-time acquisition cost
$199 USD
Separate from the monthly operations hub subscription (Basic / Pro / Enterprise plans).
GatewaySentinel Gateway
Edge gateway with a higher-gain outdoor antenna — extends LoRa coverage and stabilizes the link to the hub.
What it’s for
- Field → cloud bridge when IP connectivity is available
- Better reach for sites and wide perimeters
- Fixed deployment complementing mobile nodes
One-time acquisition cost
$449 USD
Separate from the monthly operations hub subscription (Basic / Pro / Enterprise plans).
Connectivity
Mesh network simulation
When LTE drops, nodes hunt for neighbors. Sentinel models continuity: redundant links, contextual SOS, and traceability after the incident.
What you get
Built when the mission won’t wait
Three concrete promises for operations and security leaders.
Total visibility where GPS fails
Mesh, BLE, and smartphones combine so your operations center still sees units when LTE or phone GPS drops in the field.
Military-grade encryption
Sensitive messages are protected on the device before they hit the air. Data stays isolated per organization with strict access control.
Deployment in minutes
No endless projects: register the company, assign roles, and your field team can link hardware and app to the same operations hub.
How it works
From zero to operational—fast
A short path for teams that can’t afford weeks of integration.
- 01
Spin up your organization
Minutes to onboard, with admin and operator roles—no integrator required for the first rollout.
- 02
Link field and control room
The Sentinel app and hardware share one protocol; map and history show SOS, positions, and messages together.
- 03
Operate with resilience
When the network collapses, the architecture favors continuity until primary links return—with traceability after the incident.
Communications engineering
Operational specification
Nodes form local ad-hoc links with measurable hops: the map reflects radio neighborhood, not just GPS dots. You can size redundancy, bottlenecks, and traffic evacuation routes when LTE drops.
Zero-Grid is where commercial grid is not trustworthy: tunnel, mine, jungle, hostile RF border. Sentinel prioritizes continuity via mesh, BLE, and low-frequency radios—keeping state and SOS until backbone or satellite hop returns.
Link profiles built for extreme efficiency, low on-air exposure, and noisy environments: on-device encryption, compact framing, and candidates such as LoRa for penetration and near-vacuum use—treating the link as engineering, not a slogan.
Hard multi-tenancy per organization, keys and policy under your operational control, hub access traces, and sensitive messages never sent in clear. Your data orbits your policy—not the carrier’s.
Yes: interference, selective jamming, absent towers, and long links under stress are the use case. The architecture blends ground mesh, low frequency, and hub synchronization for incidents beyond “field with signal.” Near-space is approached with the same efficiency and link-autonomy principles—without hand-wavy promises.
Sentinel uses automatic monthly billing through Stripe. You can cancel or change plans anytime from your management panel.
No. Sentinel’s plan architecture is transparent and tied to the scale of your technical operation.
Sentinel app
Prysma in your hand
Your fleet, under control on any terrain.
sentinel
FLOTALIVE
sentinel
FLOTALIVE
Coming soon
Download on theApp Store
Mission ready
Get it onGoogle Play
Mobile rollout on mission calendar
Plan architecture, real-world scale
Live pricing from the platform. Pick a starting point; Enterprise adds tactical emphasis and hands-on Prysma support.
Basic
Free
USD · billed monthly
Teams starting to centralize the fleet on one map.
- Up to 5 nodes
- Event history: 1 day(s) retention
- Up to 10,000 ingest events per month
- No CSV export on this tier
- Web hub + Sentinel mobile app (same organization)
- Geofences on the map + restricted-zone alerts on mobile (when enabled)
- SOS alerts and per-unit fleet chat
Pro
$79
USD · billed monthly
Day-to-day ops with more nodes, event retention, and CSV export.
- Up to 50 nodes
- Event history: 7 day(s) retention
- Up to 500,000 ingest events per month
- CSV export from the operations hub
- Web hub + Sentinel mobile app (same organization)
- Geofences on the map + restricted-zone alerts on mobile (when enabled)
- SOS alerts and per-unit fleet chat
Enterprise
$249
USD · billed monthly
Large operations, SLA, and hands-on Prysma support.
- Unlimited nodes
- Event history: 30 day(s) retention
- Unlimited monthly ingest quota (fair use)
- CSV export from the operations hub
- Web hub + Sentinel mobile app (same organization)
- Geofences on the map + restricted-zone alerts on mobile (when enabled)
- SOS alerts and per-unit fleet chat
Contact
Tell us about your operation
Leave a message and the Prysma team will follow up for a demo or commercial proposal. We prioritize field and security operations.
- Integrations and multi-site rollout
- Training for operators and administrators
- Service levels scaled to your volume