Pro-Check 725

Pro-Check 725

Pro-Check trailer light testers with advanced electrical diagnostics are rugged, lightweight, and economical. They independently test each electrical circuit on a trailer to ensure proper connectivity. The Pro-Check identifies each specific type of electrical wiring fault. Lite-Check’s patented active diagnostic system takes the guesswork out of identifying trailer light and electrical problems. The Pro-Check commercial trailer light tester with electrical circuit diagnostics, not only identifies faults, but the specific circuit the fault is on. Faults are identified as “Open Circuit”, “Open Ground”, “Short” (w/all circuits identified), or “Chassis Ground”. Audible alarms alert technicians to found electrical faults.


Available in three versions, the Pro-Check is the ultimate commercial trailer light tester and electrical diagnostics tool on the market today.



The Pro-Check 725 includes a 7-way “flat-pin” connector and remote control. The Pro-Check 725 is best suited for testing medium and light-duty trailers (utility trailers). Powered by a 12-volt DC power source, the Pro-Check 725 has an on-board battery voltage display and activates trailer brake lights for as long as the trailer’s brake lights are activated with the trailer light tester diagnostics controls.

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    Improved Quality

    Pro-Check products provide technicians with more information than available through switch boxes. The Pro-Check both identifies the fault and where it is so technicians can accurately and rapidly make repairs and get trailers back in service.


    Circuit Identification

    Accurately identifies circuit which has a fault. This allows the technician to efficiently fix the circuit with minimal time invested.


    Accurate Battery Readings

    The PRO-CHECK 720 makes troubleshooting brake-battery issues easy.


    Increased Accuracy

    The LITE-CHECK, PRO-CHECK 720 provides technicians fault information via audible alarm and an easily read digital screen so technicians can easily identify a fault’s location and applicable fix.


    Streamlined Electrical Inspections

    With the included remote control, a single technician can perform a complete 360° visual inspection while the PRO-CHECK automates a complete circuitry test.


    Minimal Training

    The PRO-CHECK’s use is straightforward and intuitive, providing shops with minimal downtime due to training.


    Fault Identification

    Accurately identifies each fault and presents on digital display. Taking the guess work out for the technician, shortening diagnostic time.

    Identifiable Faults

    • Open Circuit
    • Open Ground
    • Short (w/ all circuits identified)
    • Chassis Ground

Contact us


301 North Havana Street

Spokane, WA 99202






Monday - Fridays: 6am to 4pm(Pacific Time)


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