Everything Guardian watches
A closer look at how the app and a handful of off-the-shelf sensors keep your vessel or rig safe from floods, dead batteries, and power loss.
Automatic water shutoff
Never come home to a flooded cabin. Guardian integrates deeply with LinkTap smart valves to stop a burst line before it does real damage.
- Real-time flow metering: See exactly how many gallons are moving through your plumbing, second by second.
- Volume & rate limits: Set a ceiling on usage — if a fitting fails and flow runs away, the valve closes itself.
- Close from anywhere: Shut your main water line from anywhere in the world — closing the valve is free on every plan, on your own network and off it. Opening it from the app (with wash-down and run programming) comes with the paid plans.
- Local gateway: The LinkTap Gateway is driven directly on your network, with no cloud latency when you're aboard.
12V battery & shore power health
Your rig runs on its 12V system. Guardian keeps a constant eye on it so you never wake up to a dead bank or a thawed fridge.
- Precision voltage tracking: Graph house and starter banks over time and catch deep discharge early.
- Shore power status: Know the instant a marina or campground pedestal drops AC.
- Climate awareness: Temperature and humidity monitoring is on the roadmap to fight mold and frozen pipes.
- Reliable hardware: Built on the low-power Shelly Plus Uni and Shelly PM Mini Gen3.
Bilge & high-water alarms
Shelly Flood Gen4 sensors plus a Cloudflare Worker mean the alert reaches you the second water shows up — no fragile hub in the middle.
- Direct webhook receivers: Sensors fire straight to our edge network, bypassing flaky cloud hubs.
- Instant push notifications: Get alerted on your phone the moment a leak or power failure is detected — native push on Android today (iPhone via the web app; a native iOS build is on the roadmap). Away push alerts are free on every plan.
- Automated emergency actions: A critical alert can trigger the LinkTap valve to close — locally while a device is on your network, with a cloud auto-shutoff fallback for when you're away. Both are free on every plan.
Local-first architecture
Off-grid, your safety systems shouldn't fall apart just because there's no cell signal. Guardian is built to run on your own network first.
- Zero-latency local API: On the same Wi-Fi as your sensors, the dashboard talks to them directly — no internet needed.
- Seamless cloud fallback: Leave the dock and the app switches to cloud polling so you keep control from afar.
Share the vessel, not the password
Boats and rigs are rarely a one-person show. Guardian shares access per vehicle, with roles that match how much you trust each person's thumbs.
- Three roles: Full Admin, Monitor & Control, or view-only Monitor — your marina neighbor can check on the boat without being able to open the water.
- Per-vehicle plans: The vehicle carries its plan, a bit like Plex — everyone you share with inherits its features at no extra cost.
- One owner, always: Each vehicle has a single owner, and ownership transfers cleanly when a boat changes hands.
- Simple invites: Invite by email — Guardian sends the invitation, and the other person accepts in the account portal or inside their app.
History that tells the story
A single reading says "fine." A week of readings says "your charger is slowly losing the battle." Guardian keeps the story.
- On-device history, always free: Water usage and events are recorded on your device on every tier.
- Hosted retention: The Basic plan keeps about a month of cloud history; Premium keeps up to 3 years at ~30-second resolution.
- CSV export: Premium exports your usage history for spreadsheets, insurance, or your own analysis.
Free core, everywhere
The core app is free on every platform. Optional hosted Basic & Premium plans cover automatic remote monitoring, history, and extra alert destinations.
- Desktop native (Tauri): A lightweight, fast app for macOS and Windows — perfect for the nav station.
- Mobile native (Capacitor): Android APK with real native push notifications.
- Web dashboard: Launch instantly in any browser, nothing to install.