Wireless Trailer Diagnostics That Just Work
Purpose-built hardware for owner-operators, fleet managers, and trailer manufacturers. Powered by M18 batteries with NFC instant app launch for all-day wireless diagnostics and fault detection — directly from your phone.
Choose Your Kit
Every kit includes the Trailer Check Pro diagnostic module. Pick the cable set that matches your trailer.
Light Duty / RV Kit
For recreational & light-use trailers
Everything you need to diagnose and monitor light-duty and RV trailers. Includes the Pro Case with light-duty cable adapters for standard trailer connectors.
- Trailer Check Pro Case (BLE 5.0)
- Powered by M18 batteries
- NFC instant app launch
- IP67/IP69K rugged waterproof rating
- Built-in carrying handle
- 4-way flat & 7-way RV adapters
- Over-the-air firmware updates
- 1-year warranty
Complete Combo Kit
Best value — everything in one package
The full professional package. Get both light-duty and heavy-duty cable sets with the Pro Case.
- Trailer Check Pro Case (BLE 5.0)
- Powered by M18 batteries
- NFC instant app launch
- IP67/IP69K rugged waterproof rating
- Built-in carrying handle
- All cable adapters (light + heavy duty)
- SAE J560 compliant heavy-duty adapter
- Over-the-air firmware updates
- 1-year warranty
Heavy / Commercial Kit
For commercial & fleet trailers
Built for the demands of commercial fleets. Includes the Pro Case with industrial-grade cables and SAE J560 compliance.
- Trailer Check Pro Case (BLE 5.0)
- Powered by M18 batteries
- NFC instant app launch
- IP67/IP69K rugged waterproof rating
- Built-in carrying handle
- Heavy-duty 7-way commercial cable
- SAE J560 compliant adapter
- 1-year warranty
Compare Kits Side-by-Side
Every feature at a glance. Find the perfect kit for your operation.
| Feature | Light Duty$179.99 | Heavy Duty$249.99 | Combo$349.99 |
|---|---|---|---|
| M18 Battery Compatible | |||
| NFC App Launch | |||
| Integrated Carrying Handle | |||
| BLE 5.0 Connectivity | |||
| IP67/IP69K Waterproof Rating | |||
| OTA Firmware Updates | |||
| 4-Way Flat Adapter | — | ||
| 7-Way Round Adapter (RV) | — | ||
| 7-Way Commercial Cable | — | ||
| SAE J560 Compliance | — | ||
| Warranty | 1 Year | 1 Year | 1 Year |
Trusted by Operators Nationwide
Hear from the professionals who rely on Trailer Check Pro every day.
“This tool is a massive time-saver. I hooked the Pro Case up to my 53-footer and instantly pinpointed a wiring fault I'd been chasing for weeks. An absolute must-have for any owner-operator.”
Mike R.
Owner-Operator, Texas
“The RV kit was exactly what I needed for my travel trailer. Setup took two minutes, and now I can verify all my lights and brakes from my phone before hitting the road. Incredibly reliable.”
Greg K.
RV Enthusiast, Colorado
“We implemented Trailer Check Pro across our 40-trailer fleet, cutting inspection times in half and eliminating guesswork in the shop. The ROI was evident within the first few weeks of use.”
Dave M.
Fleet Manager, Ohio
Frequently Asked Questions
Everything you need to know before you buy.
Trailer Check Pro works with virtually all trailer types — from light-duty utility trailers and RVs to heavy commercial semi-trailers. The Light Duty kit includes 4-way flat and 7-way round adapters for recreational use. The Heavy Duty kit includes SAE J560 compliant connectors for commercial fleets.
The Trailer Check Pro case is powered by standard Milwaukee M18 batteries. Simply snap in any M18 battery for all-day continuous testing without needing a wall outlet or external power source.
The case uses Bluetooth Low Energy (BLE) 5.0 for a reliable wireless connection that reaches up to 100 meters (300+ feet) in outdoor line-of-sight conditions. For instant access, simply tap your smartphone against the NFC logo on the case — it will automatically launch the web app where you can tap to connect. No native app install required.
All Trailer Check Pro kits include a 1-year warranty. The warranty covers manufacturing defects, component failure, and waterproofing integrity. Cable wear from normal use is not covered.
Absolutely. We offer a 30-day no-questions-asked return policy. If Trailer Check Pro doesn't meet your needs, ship it back for a full refund. We'll even cover return shipping.
Firmware updates are delivered over-the-air (OTA) through the web app. When connected via Bluetooth, the app will notify you of available updates. One tap to download and install — the entire process takes about 60 seconds. No cables or computers required.
Yes. We work directly with trailer manufacturers providing volume pricing and custom solutions for end-of-line testing and certification. Scroll down to the "Building Trailers?" section or contact us at sales@trailercheckpro.com for custom quotes.
Building Trailers? Let's Talk.
We work with trailer manufacturers providing volume pricing and custom solutions for end-of-line testing. Whether you're building 10 trailers or 10,000 — Trailer Check Pro is the perfect tool to test, diagnose, and certify every trailer before it leaves your facility.