eur switch A Long vale Brand For extended sensing with ES Series Proximity Switches The Euroswitch ES Series proximity switches use a “Hermetically Sealed Reed Element”. Reed switches are electromechanical devices that detect the position of a magnetic field; therefore, they require an external magnetic actuator to operate. Detailed below are our standard range of magnets designed to give solutions to a multitude of applications. MA-3S Specifications Max Sensing Range 26mm (1.02") Body Material 316L Stainless Steel Dimensions 67mmx19mmx13mm x2 3.5mm Through Mounting Holes Magnetic Actuator Combinations For detailed information please visit, www.euroswitch.com. Operating Principles To obtain the best results possible in your application, certain consideration should be observed. Here are the two most typical examples of how the target would approach the ES Series Sensor.