Series 3000 pressure 
				switches convert a pressure signal to an electrical 
				output. In response to a change in pressure, movement of an 
				elastomeric diaphragm opens or closes an electrical circuit 
				based on a predetermined pressure set point. The Series 3000 
				features cost effective, snap-acting electrical switches and 
				field adjustable set points with a visual scale for easy set 
				point selection. Pressure ranges as low as 2" Water Column 
				(W.C.)* up to 100 PSI are available. Series 3000 switches assure 
				control stability through wide and variable temperature and 
				humidity conditions and assure uninterrupted service under 
				extreme shock and vibration. As with all Tecmark® products, 
				series 3000 switches provide superior performance and 100,000 
				cycle life under full mechanical, electrical and thermal loads.
					
						
							
								
Series 3900 pressure switches are widely used in pilot duty applications and incorporate field adjustable set points and internal switch contacts. These switches convert a pressure signal to an electrical output. In response to a change in pressure, movement of an elastomeric diaphragm opens or closes an electrical circuit based on a predetermined pressure set point. The Series 3900 feature a compact size and a cost effective, combination terminal design which allows electrical connection with either 1/4" quick connect or #8 screw terminals. Pressure ranges as low as 6" Water Column (W.C.)* up to 5 PSI are available (1.5 kPa to 34.5 kPa). Series 3900 switches assure control stability through wide temperature and humidity conditions. As with all Tecmark® products, Series 3900 switches provide superior performance and uninterrupted service, even under extreme shock and vibration.
 
						
					
				
			
		Series 3900 pressure switches are widely used in pilot duty applications and incorporate field adjustable set points and internal switch contacts. These switches convert a pressure signal to an electrical output. In response to a change in pressure, movement of an elastomeric diaphragm opens or closes an electrical circuit based on a predetermined pressure set point. The Series 3900 feature a compact size and a cost effective, combination terminal design which allows electrical connection with either 1/4" quick connect or #8 screw terminals. Pressure ranges as low as 6" Water Column (W.C.)* up to 5 PSI are available (1.5 kPa to 34.5 kPa). Series 3900 switches assure control stability through wide temperature and humidity conditions. As with all Tecmark® products, Series 3900 switches provide superior performance and uninterrupted service, even under extreme shock and vibration.

 
 










