• 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…) 

• Axle Temperature + TPMS in One System — watches both failure points simultaneously
• Bluetooth 5 Mesh Listening Network — no repeaters, no boosters required
• TPMS sensors are rated for up to 250 PSI — covering every common trailer tire, including Class A RVs at 110 PSI. Most budget systems cap at 87 PSI, and even premium RV systems top out around 188–232 PSI. This means the TWD-1500 works with every common trailer tire on the road, including Class A RVs running 110 PSI, heavy commercial setups, and high-pressure specialty tires.
• No-Drill Magnetic Axle Sensors — mount in seconds with 30 lbs of magnetic force
• IP67 Waterproof — rain, mud, salt spray, boat ramp submersion
• Real-Time Smartphone Alerts — iOS and Android, runs in the background
• Intelligent Trend Analysis — spots patterns before failures happen
• Made in America — designed, engineered, and assembled in Ijamsville, Maryland

Most trailer blowouts stem from conditions that monitoring can flag early. Nearly half of roadside service calls are tire-related, and a single wheel-end failure can cost thousands in repairs and towing.

Most trailer owners don’t know there’s a problem until they smell burning rubber or feel a wobble. By then, the damage is done — blown tire, seized bearing, or worse.

The TWD-1500 catches what you can’t see or feel. It monitors axle temperature and tire pressure continuously while you drive, alerting you at the first sign of trouble. One prevented breakdown pays for the entire system.

Your trailer. Your cargo. Your family behind you on the road. That’s why it matters.

• 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.

Will this work on my trailer?
Absolutely! The TWD-1500 works on any trailer — campers, boats, horse trailers, flatbeds, utility haulers, and more. No matter the size or axle type.

Is there a subscription or monthly fee?
No. Zero. One-time purchase. The app is free on iOS and Android. No subscriptions, no hidden costs.

Is the TWD-1500 hard to install?
Under an hour with basic hand tools and a drill. No complex wiring, no shop visit needed.

Is the TWD-1500 waterproof?
Every component is IP67 rated — rain, mud, salt spray, boat ramp launches. Built for real trailer conditions.

What’s the range? Will it work on long trailers?
Bluetooth 5 mesh network — no repeaters needed. Works on everything from 20-foot trailers to 53-foot commercial rigs.

What’s the difference between Standard and Commercial?
Same technology, different sizing. Standard covers single/double/triple axle (from $395). Commercial covers dually and quad axle (from $695).

Does the app run in the background?
Yes. Use your phone normally — TWD monitors behind the scenes and only alerts you when something needs attention.