Magnet contact door opening detector CM series

Magnetic contacts are a system for monitoring the condition of doors, windows or other moving elements such as blinds. It is an instantaneous alarm that acts by means of a reed contact and a permanent magnet that when they are no longer in contact, alters the magnetic field and interrupts the signal. For a correct selection of magnetic contact, it is necessary to differentiate between two types of surfaces, ferromagnetic (Fe) surfaces such as iron and non-ferromagnetic surfaces (NFe) such as plastic.