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720, 724, 725
Automated Trailer Tester: Lighting & Electrical Systems 

Commercial Trailer Tester
12 volt DC output / 12 volt DC or 110 volt AC input power is required

The LITE-CHECK PRO-CHECK is a rugged, lightweight, and low cost family of computer controlled trailer testers. LITE-CHECK's patented active diagnostic system takes the mystery out of identifying electrical problems in trailers by directly identifying each specific type of electrical wiring fault and the specific electrical circuits that they are present on  Each fault is identified on the PRO-CHECK's digital display as an Open Circuit, Open Ground, Short (w/ all circuits identified), or Chassis Ground.  An audible alarm sounds whenever a fault is present in a circuit that is being tested, and the alarms are unique for each type of fault.

The PRO-CHECK is available in three distinct models:
  • The PRO-CHECK 720 - comes with a 7-way "round-pin" connector, standard remote, and is well suited for rapid inspections of commercial trailers. The PRO-CHECK 720 is available in two versions: The PRO-CHECK 720 (PC720) is powered by a 12 volt DC power source, while the PRO-CHECK 720AC contains a built-in 12 Volt DC regulated power supply allowing it to be connected directly to an AC outlet (PC720AC)
  • The PRO-CHECK 725 - comes with a 7-way "flat-pin" connector, optional remote, and works best with medium/lite-duty trailers, such as U-haul trailers. The PRO-CHECK 725 is available in two versions: The PRO-CHECK 725 (PC725) is powered by a 12 volt DC power source.
  • The PRO-CHECK 724 - comes with a 12-pin connector, included remote, and addresses the inspection needs of military trailers with 24 volt electrical circuits. Note: The PRO-CHECK 724 requires a 24 volt DC power source.
  • Auxiliary circuit button on remote simplifies ABS self-test inspections
  • Technician-oriented interface for easy use
  • 18 Amp, 12VDC output power for PC720 & PC725
  • 18 Amp, 24VDC output power for PC724
  • Direct readout of electrical faults:
         Open Circuit
          Open Ground
          Short (w/ all circuits identified)
          Chassis Ground
  • 10-second automated all-circuit test with audible alarms
  • Average measurements for each circuit and the ability to perform a TMC RP 141 ABS Power Supply Requirements Test
  • Easy-to-read digital display
  • Automatic current management when chassis grounds are identified prevents damage to trailer electrical systems
  • Direct control of each circuit from tester's control panel and the remote control
  • Unique and easy to hear audible alarms for each type of electrical fault
  • Made to industrial standards in the USA
  • Electric trailer brake support is built into the PRO-CHECK 725: Onboard battery voltage is displayed, and brakes are activated along with the trailer's brake lights.
  • All PRO-CHECK testers are available in versions that operate on DC power, making them suitable for both shop and mobile applications. A battery or a regulated DC power supply is appropriate. Unregulated power supplies such as inverters and battery chargers cannot be used without a battery in the circuit to prevent damage to either the trailer electronics or the tester.
  • The PRO-CHECK 720 is also available in a 120 volt AC version (PC720AC)
  • Input Voltages:
    • PC720 - 12 volts DC (battery or regulated pwr)
    • PC 724 - 24 volts DC (battery or regulated pwr)
    • PC 725 - 12 volts DC (battery or regulated pwr)

What Comes in the Box
  • PRO-CHECK 720, 724, or 725 Tester
  • Remote Control with "high-visibility" neck pouch (Optional with 725)
  • Owner's Manual
  • One year warranty that includes software updates and phone support.

  • DC Power Supply
  • Additional Remote Control units
  • Remote Control Neck Pouch
  • Cables of various lengths
How to Purchase
LITE-CHECK products are sold directly by LITE-CHECK, LLC, at manufacturer direct prices. GSA pricing is available on the 910B and several other LITE-CHECK trailer test and inspection systems.

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