Long Range Proximity Sensor - 12 mm Diameter, Shielded, Normally Closed - NPNThis extra long range 12 mm diameter shielded proximity sensor is Normally Closed, which makes it useful to detect holes. It has a 9mm sensing range, and is one of the most useful general purpose die protection sensors. This sensor has a threaded housing, and should be secured into an M12 x 1 threaded hole with thread locker. If the sensor is to be removed from the die during maintenance, epoxy it into a removable bushing or insert. As a Normally