The System

One device. Your whole boat. Anywhere you are.

Roaming Shield is three parts working as one: a rugged onboard device wired into your boat, a mobile app that shows you everything live, and a cloud service that connects them wherever you are.

The device

A marine-built unit that connects to your boat’s power (9–32 V), its NMEA 2000 instrument network, and up to 8 sensors and 8 switched outputs: hatches, bilge float switches, sirens, lights, pumps. Onboard motion and temperature sensing built in. Designed in Australia.

Three ways to stay connected

• Cellular: full remote access anywhere there’s mobile coverage.
• Boat network (Ethernet): Roaming Shield plugs straight into your boat’s network. If the boat has Wi-Fi, your phone talks to the device directly: no internet, no cloud, and nearly everything still works.
• LoRa long-range radio: kilometre-class range with a masthead antenna. No cellular needed: anchor in a dead spot and your boat can still reach you ashore.

The device works through whichever link is available. Connectivity is treated as something to fight for, not assume.

Power you can trust

Wide-input marine power with protection on every port, plus an onboard backup reserve. If main power is cut, by failure or foul play, Roaming Shield sends a last-gasp alert over its LoRa radio instead of just disappearing.

Honest data, honestly aged

Most monitoring shows you a number without telling you how old it is. Roaming Shield timestamps every reading at the source, so the app can tell you “battery 12.1 V, 4 seconds ago” and never lets stale data wear a fresh face. When you’re deciding whether to drive to the marina at 2am, that difference matters.

The app

Live map and boat data, arm/disarm, alert history, output control. And the alert thresholds are yours to set. Android first; iOS to follow.