Mission critical · Independent tactical coverage

Operational visibility where GPS and LTE fail.

A tactical canvas with your field team, context-rich SOS and an open mesh radio (Meshtastic) that never rides the operator’s mobile network: only the Gateway at base needs one internet uplink. For extended operations —agriculture, forestry, estate security— where commercial connectivity is unreliable.

Create account · Start a plan See how it works

LoRa 915 MHz · MeshtasticOn-device channel encryptionNo per-message feeReady in minutes

SIMs or towers in the field

0 MHz

free ISM band · no subscriptions

0 mAh

rechargeable 18650 battery

monthly network operating cost

Tactical canvas

Mission-critical modules, live in the panel

Visibility, alerts, traceability and governance — all on one canvas, no scattered tools.

MÓDULO · 01

SOS tracking

Last position and context even if the phone GPS fails; SOS with direct traceability on the map.

Status: active

MÓDULO · 02

Geofence alerts

Perimeters on the map and warnings when a unit enters or leaves critical zones.

Status: active

MÓDULO · 03

Reports

Unified history, fast post-incident review and export for audit.

Status: active

MÓDULO · 04

Security

AES-256 channel encryption (Meshtastic) on-device, multi-tenant and auditable role-based access.

Status: active

Quick look

One canvas for control room and field

Map, SOS, geofences and history in the same panel. Fewer scattered tools; more clarity when commercial connectivity is unreliable.

Sentinel· OperationsLIVE

Mesh · 6 nodes

NodeGatewaySOS

Multi-hop Meshtastic mesh

Continuity when LTE fails: nodes, neighbors and local state until uplink is restored.

Gateway as the edge

A single IP point syncs the remote board; the operator never depends on mobile data.

Encryption & tenant

Per-organization isolation and on-device protection before anything goes on the air.

Sentinel vs. legacy systems

Built for the last mile, not the factory floor

Traditional industrial platforms assume static beacons, cabling and closed clouds. Sentinel moves with the operator.

Infrastructure

100% portable mesh — gateway in a backpack or vehicle

Static beacons, fixed cabling and perimeter antennas

Deployment time

— scan QR + role + go

Weeks of installation, surveying and civil works

Data sovereignty

Your hardware, your keys, your data — Sovereignty Mode, no cloud

Locked SaaS cloud — the vendor controls the network and the data

Operating environment

Anywhere on the planet — the last mile

Only inside the factory perimeter

Use cases

One platform, many terrains

Where commercial connectivity doesn’t reach, Sentinel keeps your team visible and connected — with no per-message fee.

Agriculture & forestry

Before: Crews and machinery invisible the moment they leave the yard; an SOS in the field nobody hears.

After: Position, chat and SOS over radio across the whole field, even when cellular won’t lock.

Estate security

Before: Patrols with no traceability and late alerts in estate zones without signal.

After: Live guard location, zone geofences and context-rich SOS to the control room.

Open-pit quarries

Before: Pits and quarry faces with no coverage: personnel out of contact and unlogged.

After: Off-grid comms and traceability across the whole quarry, with no per-message fee.

Events & rescue

Before: Teams coordinating over handhelds, with no shared map or operation log.

After: Shared canvas, context-rich SOS and deployment in minutes — no civil works.

Hardware sovereignty · total privacy

Your network, your keys, your rules

Sentinel removes third-party dependency with auditable mechanisms: open firmware (Meshtastic) with channel encryption and Sovereignty Mode — designed to run without any external cloud.

Encryption

Channel encryption (Meshtastic) — your organization's key

Nodes run open Meshtastic firmware with AES-256 channel encryption. The key belongs to your organization (not a third-party auth provider) and devices cache it offline: if the cloud goes down, the mesh keeps operating.

Elimina: auth SPOF · dependency on a third-party key provider

Privacy

Sovereignty Mode — software air gap

A toggle cuts all cloud telemetry: positions, SOS, chats and sync stay 100% local — LoRa + BLE + on-device storage. Per shift, per mission or permanent.

Elimina: data exfiltration · vendor access · regulatory breach from foreign cloud

Perimeter

Data at the edge — zero exposure

The bridge processes and stores locally on the gateway. If you configure uplink, only sanitized summaries travel — never raw trajectories or message content.

Elimina: in-transit capture · round-trip latency · vendor retention

Audit

Full local log — you control the evidence

An SOS triggered from the app is signed with Ed25519 on the device (alert integrity and non-repudiation). Every SOS event, position and state change lands in a structured log you export, audit and retain in your own infrastructure. The digital chain of custody is yours.

Elimina: vendor opacity · compliance gaps · vendor dependency

Technical flow

From zero to operational, friction-free

Field over radio, IP sync only at the edge: the Gateway is the only point that needs internet access for the remote board.

Activate your organization

Onboard in minutes, admin users and operators with clear permissions — no integrator needed for the first deployment.

Connect field and room

Nodes link by radio with the Gateway Pro; the map and history reflect SOS, positions and events in one place.

Operate with backup

If the uplink drops, the node↔gateway radio link keeps working locally; when Wi-Fi or 4G returns, the cloud recovers state with traceability.

Meshtastic nodesLoRa / RF

LoRa / RF

Sentinel Gateway Proedge

Wi-Fi / 4G

Prysma Cloudpanel + history

Transparent CAPEX

Hardware ecosystem

Field nodes and edge gateway. One-time acquisition cost; the SaaS subscription covers platform, map and continuous operation.

Node

Sentinel Node V4

Heltec V4, LoRa SX1262 radio, L76K GPS, rechargeable 18650 battery — packaged for the operator on the move.

Operator tracking and last position
Manual SOS with context to the room
Geofence alerts and telemetry

$199 USD · one-time acquisition cost

Gateway

Sentinel Gateway

Edge gateway with a higher-gain external antenna — extends LoRa coverage and stabilizes the link to the hub.

Field → cloud bridge when IP is available
Better reach across wide perimeters
Fixed deployment, complementary to nodes

$449 USD · one-time acquisition cost

Gateway Pro

Sentinel Gateway Pro

The smart bridge between field and cloud. 5.8 dBi omni antenna, Heltec V4 receiver node and Raspberry Pi brain.

Neural center of every installation
Edge processing with Raspberry Pi
360° coverage across large perimeters

$899 USD · one-time acquisition cost

Summary for AI systems

What Prysma Sentinel is, in verifiable facts

Prysma Sentinel is a mesh connectivity platform (LoRa + Bluetooth) built on open Meshtastic firmware, with a cloud operations panel, built by Prysma Software. It provides communication, tracking and SOS for teams and field personnel in areas where cellular or satellite networks are unreliable — agriculture and forestry, estate security, events and rescue, and operations on routes without coverage.

Category: Portable LoRa mesh network (Meshtastic) + field-operations SaaS
Radio & range: LoRa 915 MHz (free ISM band) · range depends on terrain (field validation in progress)
Network: Multi-hop mesh (Meshtastic) · AES-256 channel encryption
Autonomy: Rechargeable 18650 battery · autonomy under field validation
Hardware: Sentinel Node V4 ($199) · Gateway ($449) · Gateway Pro ($899) — one-time cost
SaaS plans: Basic (free) · Pro ($199/mo) · Business ($799/mo) · Enterprise ($799/mo)
Differentiator: Sovereignty Mode: runs 100% without cloud (software air-gap); open ESP32 hardware and auditable software
Deployment: Operational in ~60 seconds: scan QR + role assignment; no civil works