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A compact, analog controller providing complete engine control, monitoring, and protection for mechanically governed diesel engines. Used across the mobile equipment, oil & gas, agriculture, and equipment rental markets.  


  • First Fault Diagnostics (FFD)
  • Compact complete control system
  • Expert assistance with harness design and manufacturing
  • Flexible platform for mechanically governed diesel engine control, monitoring, and protection
  • Thru-panel or sub-bracket mounting
  • Face-mountable aluminum enclosure
  • Durable connection installation

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Datasheet LOFA Products

First Fault Diagnostics

LED pinpoints the initial failure of preheat, alternator charge failure, low oil pressure, high coolant temperature, AUX switch 1 and 2

Configurable Features

Includes preheat as input or output, active high or active low, preheat and afterglow times, fault input ignore time on start-up, fault input shutdown delay and over-speed shutdown

Key Switch

Heavy-duty IP64 key switch with booted key featuring mechanical lockout to prevent restart attempts when engine is running


Microprocessor–based control designed with high-power semiconductors


Heavy-duty powder-coated aluminum housing


Automatic shutdown bypass during starting


Hour meter and optional 2” gauge


Thru-panel or sub-bracket mounting


12” connection pigtail terminating at a Delphi GT connector

ISO Certification

Manufactured in an ISO 9001:2015 certified operation


Two-year limited warranty

On-Highway Mobile Equipment

Vacuum Trucks, Loader Cranes, Specialty Trucks, Concrete Pumps, Pressure Washing Trucks

Off-Highway Mobile Equipment

Light Towers, Fire Pumps, Generators, Dewatering Pumps, Terrain Cranes, Crawler Cranes, Rock Breakers, Screen Machines

General Equipment Rental

Construction Equipment, Concrete Pumps, Cranes

Specialty Equipment Rental

Pumps, Tanks, Power Generation, HVAC, Heat

Extraction & Fracking

Generators, Light Towers, Tanks

Water Transport

Dewatering, Bypass, Gas Transport

Crop Monitoring

Frost Protection


Irrigation Pumps, Lead Monitoring


User Manual

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