About Master Control Systems

Master, the industry's innovative leader, manufactures Fire Pump Controllers for fire sprinkler systems.  These controllers automatically start the fire pump in the event of a fire.  Because they are designed with innovative features that benefit the user and engineered for long term reliability, we call our product line "The Intelligent Choice".  All of these controllers meet and exceed the requirements of NFPA 20.  They are listed by Underwriters Laboratories and approved by the Factory Mutual System.

In addition to the world's best line of fire pump controllers, Master Controls also manfuactures high reliability stand-by and float service Battery Chargers.  The company also manufactures an extensive line of Industrial Control Panels including pumping panels for duplex, triplex and many other applicatons.

Master Control Systems was founded in 1965 by William L. Stelter by the purchase of a line of industrial control products first manufactured in 1932.  Master Control Systems remains a family owned and operated business.  The Line of Electric Fire Pump Controllers was acquired from the General Electric Company in 1980.  This included the acquisition of the G.E. CR235 and CR335 line of Fire Pump Controller product lines.

For more information or assistance, you can email the following people:


If you prefer, you can call at: (847) 295-1010
  or FAX at: (847) 295-0704
Mailing Address: Master Control systems, Inc.
P.O. Box 276
Lake Bluff, IL   60044-2295
Street Address: Master Control systems, Inc.
910 North Shore Drive
Lake Bluff, IL   60044-2295

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