Nascom's N400 4 inch industrial bar contact with jacketed leads protects steel and wood doors in commercial settings.The N400 is the installer's choice of contact configuration where extra wide air and side-to-side gap are required to prevent false alarms caused by shifting or warping doors. The N400 offers convenient installation with center wire leadout.FEATURESENCAPSULATED HERMETICALLY SEALED CONTACTSABS HOUSINGEXTRA WIDE GAP - N35 NdFeB RARE EARTH MAGNETSPACER FOR STEEL DOOR INSTALLSJACKETED CENTER WIRELISTED TO UL634 STANDARD
