TWD Mariner waterproof IP67 monitoring system for boat trailers Highly Rated

TWD Mariner

TWD Mariner

$395.00
$395.00
Sale Sold out
Axle Count
Trailer Length

Free 30-day Returns | Free IOS & Android App | Easy Install

Your boat isn’t just a vehicle: it’s an investment, a lifestyle, and your escape to the water. The Mariner Edition was purpose-built for safeguarding that investment every mile between the dock and the open water. Protecting not just your trailer, but the vessel riding on it.

Conventional TPMS systems were designed for passenger vehicles. The Mariner Edition was engineered for you: boaters, anglers, and watercraft owners who refuse to risk hidden trailer failures that could sink an entire weekend. Or worse, destroy their boat before it ever touches the water. With advanced monitoring of both axles and tires, it gives you the early warnings that mean the difference between a smooth launch and a nightmare on the roadside.

What's Included
  • 1 × Master TWD-1500 unit (black box with product label)
  • 2 × Rear-mounted slave modules 
  • The two smaller, matching modules are the slave units. - Right module marked with red 4-pin power connector)
  • 1 × Wire harness (“Y” connector points toward the axle modules)
  • 2 – 8 × Magnetic axle temperature sensors (depending on axle count)
  • 2 – 12 × Screw-on TPMS tire sensors (depending on tire count) 
  • 1 × Packet of mounting hardware (misc screws, zip ties, anchors, wire crimps, etc…) 

Key Features
  • Active Axle Temperature Monitoring
  • Tire Pressure & Temperature Monitoring
  • Waterproof, Marine-Grade Sensors & Modules

Why it Matters

  • Protect Your Vessel First: A blown tire or failed hub doesn’t just damage your trailer. It risks thousands of dollars in boats or watercraft strapped on top of it.
  • Prevent Catastrophic Failures: Real-time axle and hub temperature monitoring detects bearing stress or dragging brakes before they seize.
  • Keep Tires Road-Ready: Catch slow leaks and overheating before they spiral into a blowout that could leave you stranded far from the dock.

Built for the Marine Lifestyle: 100% waterproof, corrosion-resistant sensors built to thrive around ramps, splash zones, and salt air.

App Features
  • Bluetooth-enabled: works seamlessly in the background or foreground - play music or use navigation (keeps your phone accessible).
  • Dually trailer support: built for single or dual axle setups.
  • Smart problem detection: clear, easy-to-read alerts.
  • Trend identification: spot issues before they become problems.
  • Device agnostic: works on any device.
  • No cell service required: reliable monitoring anywhere.
  • Multi-view dashboard: switch between trailer view or tire view.
Install Instructions
View full details

Introducing the new TWD-1500 Series

Your boat trailer faces challenges no other trailer does — water intrusion at the ramp, salt corrosion, weeks of sitting idle then hitting the highway. The Mariner Edition is IP67 waterproof and purpose-built for the marine environment. It monitors tire pressure and bearing temperature through conditions that would kill standard electronics. Starting at $395.