The 1075 series press fit switch is a 3/8 diameter magnetic contact with wire leads. Use no glue or screws to mount; small ribs on the housing hold the contact in place. Heavy-duty housing resists crushing from swelling wood. A wide gap version is available in the 1075W for applications that may be prone to false alarms cause by the loose fitting doors. Use indoors and outdoors for an attractive recessed installation.