Governance
Multi-tenant, isolated per company
Hard separation by organization: keys, roles, and policies you control. No data or permissions bleeding across accounts.
Prysma SentinelSystem online
Mission-critical · Independent tactical coverage · Zero compromise
Operational visibility when GPS and LTE drop out.
One tactical pane for your fleet, contextual SOS, and field radio that does not ride the operator’s mobile network. Built for mines, plants, and wide-area ops where commercial connectivity is unreliable.
- Mesh & low-frequency paths
- SOS with context
- Live in minutes
Industrial-grade technology
- LoRaWAN protocol
- AES-256 encryption
- Mapbox engine
Architecture
Three pillars Sentinel is built on
Real time
Near-real-time map and streaming
Tactical picture with bounded latency—positions, events, and alerts in the hub without relying solely on the operator phone’s GPS.
Continuity
Incidents and high-stress operations
Flows for when links fail: retained context, traceable SOS, and post-incident readouts for audit and improvement.
At a glance
How Sentinel reads in one pass
A tactical snapshot of the stack before the module and capability deep-dive — for buyers who think in architecture and rollout.
Operations hub
One pane for control room and field
Map, SOS, geofences, and history in the same hub. Fewer loose tools; clearer decisions when commercial connectivity is unreliable.
Mesh & low-frequency paths
Continuity when LTE drops: nodes, neighbors, and local state until uplink returns.
Encryption & tenancy
Org isolation and on-device protection before bits leave the radio.
Gateway at the edge
One IP-capable point syncs the remote dashboard; operators don’t need mobile data to carry field RF.
Smart perimeters
Critical zone crossings with traceable alerts on the map.
Audit & export
Post-incident readouts and exportable evidence for governance.
Dual SOS
Two alert paths: app plus a physical field button.
What you get
Built when the mission won’t wait
Three concrete promises for operations and security leaders.
Independent tactical coverage
Mission-critical communications over long-range RF. Field personnel are not dependent on mobile networks or satellite links on their person.
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.
Tactical pane
System modules
Mission-critical capabilities on the tactical pane: visibility, alerts, traceability, and governance.
Module · 01
SOS tracking
Last fix and context when phone GPS drops; SOS with direct traceability on the map.
STATUS: ACTIVE
Module · 02
Geofence alerts
Map perimeters and alerts when a unit enters or exits critical zones.
STATUS: ACTIVE
Module · 03
Reporting
Unified history, fast post-incident review, and export for audit trails.
STATUS: ACTIVE
Module · 04
Security
Strong on-device encryption, multi-tenant isolation, and auditable role access.
STATUS: ACTIVE
In production
Operational capabilities
Concrete stack features: missions, perimeters, network health, and emergency redundancy.
Capability · 01
Dynamic missions
Assign and track objectives in near real time.
Capability · 02
Smart geofences
Automatic alerts when a unit enters or exits safe perimeters.
Capability · 03
Network health monitoring
Latency and status for every Gateway and node.
Capability · 04
SOS redundancy
Dual alert path: app plus physical hardware button.
Sentinel: Infrastructure-Zero Tactical Connectivity
Sentinel vs. Legacy Systems
Traditional industrial platforms were designed for the factory floor: static beacons, wiring and locked clouds. Sentinel was built for the last mile — where the operator moves and infrastructure cannot follow.
Infrastructure
Prysma Sentinel
100% mobile mesh — gateway in a backpack or vehicle
Traditional Static Infrastructure
Static beacons, fixed wiring and perimeter antennas
Setup time
Prysma Sentinel
60-second deployment: scan QR, pick role, go
Traditional Static Infrastructure
Weeks of installation, surveying and civil works
Data sovereignty
Prysma Sentinel
Your hardware, your keys, your data — Sovereignty Mode, no cloud required
Traditional Static Infrastructure
Locked SaaS cloud — vendor controls your network and data
Operational environment
Prysma Sentinel
Anywhere on Earth — the last mile
Traditional Static Infrastructure
Factory floor only
Generic architectural comparison against the category of fixed industrial platforms. No specific product or brand is referenced.
Hardware Sovereignty · Total Privacy
Your Network. Your Keys. Your Rules.
100% air-gap capableA Security Director cannot afford to let a third party control their operation's radio network. Sentinel eliminates that dependency with two auditable mechanisms: QR Handshake and Sovereignty Mode — engineered to operate with zero external cloud dependency.
AUTHENTICATION
QR Handshake — No Central Auth Server
Each Heltec device generates a rotating QR code every 30 seconds encoding an ephemeral key fragment and network ID. The app scans the code and secures the channel with no dependency on any external authentication server. If the cloud goes down, the handshake still works — the radio link never interrupts your operation.
↓Eliminates: authentication SPOF · credential theft from centralized DB · MITM during pairing
PRIVACY
Sovereignty Mode — Software Air Gap
A single toggle in the app cuts all cloud telemetry: GPS positions, SOS events, fleet chat, and sync remain 100% local — LoRa + BLE + on-device storage. No traffic to Prysma or third-party servers. Activatable per shift, per mission, or permanently.
↓Eliminates: operational data exfiltration · vendor access without your consent · regulatory non-compliance from cloud in foreign jurisdiction
PERIMETER
Data at the Edge — Zero Latency, Zero Exposure
The prysma-bridge processes and stores data locally on the gateway (Raspberry Pi or laptop). If cloud uplink is configured, only sanitized summaries travel — never raw trajectories or message content. In pure-local mode, data never crosses the operation's perimeter.
↓Eliminates: traffic interception en route to cloud · emergency latency from external server round-trip · vendor data retention
AUDIT
Full Local Log — You Control the Evidence
Every SOS event, position, and state change is stored in a structured log you can export, audit, and retain in your own infrastructure. No black boxes, no hidden vendor telemetry. In a post-incident investigation, the digital chain of custody is yours.
↓Eliminates: vendor opacity · compliance gaps in investigations · vendor dependency for incident reconstruction
Risk Mitigation Matrix
| Threat Vector | Legacy Static Infrastructure | Prysma Sentinel |
|---|---|---|
| Vendor failure / acquisition | Operational network dead — hardware without compatible firmware or support | Open hardware (ESP32) + on-prem software: network survives without the vendor |
| Industrial ransomware / cloud breach | Personnel and GPS data in vendor cloud: prime target for attackers | Sovereignty Mode: local data, no surface exposed to the external internet |
| Regulatory compliance (GDPR / local mining regulations) | Cloud in vendor's jurisdiction — outside the operator's legal control | Data on your hardware, in your jurisdiction, with your own auditable log |
| Outage from connectivity loss | Without uplink to vendor server, the network stops functioning | LoRa mesh operates without internet: SOS, position and comms remain active |
| Industrial espionage / interception in transit | Data travels to cloud over public internet — multiple interception points | End-to-end encrypted LoRa + air-gap option: no external traffic possible |
Arquitectura:The QR Handshake does not transmit the full AES-256 PSK over the air — only an ephemeral challenge fragment. The master key stays on-device and never travels over the air or any network. Sovereignty Mode is implemented in the Flutter client and the prysma-bridge: both are open-source and fully auditable by your technical team.
Talk to a security specialistTechnical flow
From zero to operational—fast
RF in the field, IP only at the edge: the Gateway is the single hop that needs internet for the remote dashboard.
Nodes communicate over radio with Sentinel Gateway Pro. The Gateway uses Wi‑Fi or cellular (4G/LTE) to sync data with the Prysma cloud.
Internet is only required at the reception point (Gateway), not for field personnel.
Hardware
Nodes (field)
LoRa / RF
Gateway Pro
Wi‑Fi or 4G/LTE
Software / cloud
Prysma cloud
Dashboard
- 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
Nodes connect over radio to Gateway Pro; the hub map and history show SOS, positions, and events in one place.
- 03
Operate with resilience
If the Gateway uplink fails, the node↔gateway RF link still works locally; when Wi‑Fi or 4G returns, the cloud catches up with post-incident traceability.
Connectivity
Mesh network simulation
When LTE drops, nodes hunt for neighbors. Sentinel models continuity: redundant links, contextual SOS, and traceability after the incident.
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).
Gateway ProSentinel Gateway Pro
The intelligent bridge between field and cloud. Includes a high-gain Omni Antenna (5.8 dBi), Heltec V4 Receiver Node, and a Raspberry Pi Processing Brain.
What it’s for
- Central hub for every installation: receives, processes, and relays
- Edge computing with Raspberry Pi for local logic and autonomy
- 5.8 dBi omni antenna for 360° coverage across wide perimeters
One-time acquisition cost
$899 USD
Separate from the monthly operations hub subscription (Basic / Pro / Enterprise plans).
Communications engineering
Operational specification
Prysma Sentinel still supports communication between nodes and the gateway locally. For the remote Dashboard, the Gateway needs an internet path (Wi‑Fi or a 4G modem/SIM).
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.
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
$199
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
$799
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
Sentinel app
Prysma in your hand
Your fleet, under control on any terrain.
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FLOTALIVE
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Available now
Download on theApp Store
Coming soon
Get it onGoogle Play
Android — coming soon on Google Play
Contact
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- Integrations and multi-site rollout
- Training for operators and administrators
- Service levels scaled to your volume