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McDonnell & Miller model number FS1-G is a 120 volt, single pole, double throw, snap liquid flow switch with gold plated contacts for high sensitivity requirements on low to moderate flow rates such as air conditioning, heating, and hydronic systems.
McDonnell & Miller model number FS1-W is a 120 volt, single pole, double throw, snap liquid flow switch for high sensitivity requirements on low to moderate flow rates such as air conditioning, heating, and hydronic systems.
McDonnell & Miller model number FS1 is a 120 volt, single pole, double throw, snap liquid flow switch for high sensitivity requirements on low to moderate flow rates such as air conditioning, heating, and hydronic systems.
McDonnell & Miller model number FS1-17 is switch for model number FS1, FS1-W, FS4-3D, FS5, FS6, FS8-W and AFE-1 flow switches. This switch is single pole, double throw.
