Ferro-magnetic metal detection sensors are manufactured with calibrated, in-built magnets that make the sensor actuate when any ferromagnetic metal is brought into the vicinity. They are capable of generating sensing signals without the need for an external actuating magnet. These Ferro-magnetic Sensors are available in two size, one having a 4.0 mm slot adjustment and the other, having an 8.0 mm slot size. They can be directly mounted on enclosures, doors and windows where a metal frame needs to be sensed. It is important that the sensing be done only from the marked side. Product pages list complete drawing, electrical and miscellaneous specifications, Usage Notes and Application examples.