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An analog micro controller that provides 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)
  • Flexible platform for mechanically governed diesel engine control, monitoring, and protection
  • Thru-panel or sub-bracket mounting
  • Face-mountable aluminum enclosure

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Datasheet LOFA Products

First Fault Diagnostics

Monitors battery charge, low oil pressure, high temperature, and up to two additional contact closure inputs


Rugged, heavy-duty powder-coated Aluflex™ aluminum enclosure with integrated isolation mounting

Automatic Shutdown

Automatic shutdown override simplifies engine starting by eliminating the need to push a button

High-Power Semiconductors

Microprocessor–based control designed with high-power semiconductors

Hour Meter

Hour meter in six minute increments


Thru-panel or threaded inserts mounting

Polarity Protection

Reverse polarity protection


12” connection pigtail terminating at a Delphi GT connector

IP64 Key Switch

Heavy-duty, IP64 water-resistant key switch with a mechanical start-locking device to prevent unwanted engagement of the starter motor after the engine is running

Mechanical Lock-Out

Key switch features mechanical lock-out to prevent re-start attempts when engine is running


Two-year limited warranty

ISO Certification

Manufactured in an ISO 9001:2015 certified operation

Plug-and-Play Harness

Available plug-and-play extension harness

Output Control

Alarm or preheat control output (active high)

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

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