This Digital Ferrous Metal Proximity Sensor features a solid-state 3/4" permanent magnet to offer the second-largest detection gap of our line of ferrous metal proximity sensors: 0.4" to 2.5".
Output options include analog only and a digital and analog version. Our digital sensors feature an option of a NPN or PNP regulated voltage output. 
These sensors come standard with a durable A12 anodized aluminum housing, and a 4 pin male 12mm micro connector with integral flange.