1640-1
Floating Contact Null Switch
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    0.02-1.0 in. w.c. Range, Adjustable Null Span, 0.02 Minimum Set, 0.06 Maximum Set.
Features
                    Floating Null Switch Supports Applications Requiring Two Set Point Actions Such As Open And Close Damper Control
                
                            
                    Visible Set Point Indicator Simplifies Operation And Trouble Shooting
                
                            
                    Large Diaphragm Provides Low Range Accuracy Providing Precise Control
                
                        