Supported Devices
To use all features of the Boat & Rv Guardian app, specific LinkTap and Shelly hardware is recommended.
(Note: Purchasing through the affiliate links below helps support the open-source project.)
LinkTap G2S Smart Valve
Must be the G2S (or newer G1S/G4S) model because it includes a built-in flow meter to track exact gallons used. Older models cannot perform volume-based shutoffs.
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LinkTap Gateway
Required to bridge your home Wi-Fi network to the Valve via Zigbee. It also provides the essential Local API endpoints for instant app communication.
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Water Pressure Regulator
Highly recommended. Always install this standard regulator after the LinkTap valve to ensure the water pressure entering your RV or Boat is safely reduced (40-50 PSI).
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Shelly Flood Sensor
A low-cost, battery-powered Wi-Fi water sensor. Place it in bilges, sumps, or under sinks to detect leaks instantly and trigger alarms.
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Shelly Plus Uni
Wires directly into your 12V house and starter battery systems to provide constant, precision voltage monitoring and status detection.
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Inline Fused Wiring Harness
Crucial for safety. Use this fused ring-terminal connection to safely wire the Shelly Plus Uni directly to your battery terminals, protecting the circuit with an inline fuse.
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Shelly PM Mini Gen3
A compact smart power meter that measures AC line voltage and power consumption. Connect it to your shore power line to monitor camp/marina electricity and receive instant black-out notifications.
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A breakdown of the low-cost, off-the-shelf devices we use and the catastrophic risks they prevent.
The Flow Tool (LinkTap)
The Risk: Sinking at the Dock
When you're hooked up to city water at a marina or RV park, a burst pipe or failed fitting means an endless supply of pressurized water flooding your rig. For boats, this can overwhelm the bilge pump and sink the vessel at the dock.
The Protection
The LinkTap Gateway and Valve act as an intelligent Flow Tool. By monitoring real-time gallons-per-minute, the system instantly detects abnormal volume (like a burst pipe) and automatically shuts off the physical water supply before catastrophic damage occurs.
- Detects leaks based on flow rate anomalies.
- Physical, motorized shut-off valve at the spigot.
- Integrates via Local API for zero-latency response.
Power Telemetry (Shelly Uni)
The Risk: Failed Bilge Pumps
A dead 12V house battery doesn't just mean your fridge thaws—it means your automatic bilge pump loses power. A slow, undetected leak will eventually sink a boat if the bilge pump doesn't have the battery juice to keep up.
The Protection
The low-cost Shelly Uni wires directly into your 12V system to provide constant, precision voltage monitoring. If your shore power drops or your battery voltage dips dangerously low, you get a push notification immediately—giving you time to get back to the boat before the bilge fails.
- Precision 12V and starter battery voltage tracking.
- Detects loss of shore AC power.
- Extremely low power draw.
12V Protection
Don't let a $100 battery drain cost you a vessel.
Remote Sensors (Shelly Flood)
The Risk: Hidden Leaks
Water can ingress from bad through-hulls, faulty seals, or rain. By the time water is visible above the floorboards, the damage to cabinetry, flooring, and electrical wiring is already done.
The Protection
Place low-cost Wi-Fi Shelly Flood sensors in your lowest bilge compartments or under your RV sinks. The second water bridges the sensor contacts, it fires a webhook to our Cloudflare network, triggering an instant push notification to your phone.
- Placed in discrete, high-risk areas.
- Battery lasts over a year.
- Can automatically trigger the LinkTap to close.
Instant Webhooks
Fraction-of-a-second alerting.
Shore Power Diagnostics (Shelly PM Mini Gen3)
The Risk: Shorepower Blackouts
When you're away from your rig or boat, a campsite power pedestal trip or a marina shore power failure can go unnoticed for hours or days. This leads to food spoiling in your fridge, deep battery discharge, and in winter, freezing cabin temperatures that can burst plumbing.
The Protection
The Shelly PM Mini Gen3 monitors AC line voltage directly. The moment AC voltage drops to zero (indicating a blackout), it fires a webhook to our Cloudflare network, which routes a high-priority push notification to your phone. This gives you plenty of time to intervene before the fridge spoils or batteries drain completely.
- Constant AC voltage and load monitoring.
- Instant power outage notifications.
- Very compact size for easy installation in electrical panels.
AC Power Tracking
Get notified instantly of site power failure.