Details: Deltrex 2757 Series High Security Concealed Magnetic Contacts

Specifically designed for high security applications in prisons, military installations, government facilities, and commercial operations the 2757 Series Magnetic Contacts are virtually impossible to defeat . Total encapsulation coupled with recess mounting prevents access to the switch and to cabling, and prevents tampering with an external magnet. These contacts are factory calibrated for operation in steel and are not subject to sticking or freezing on seldom-used doors. In addition, the 2757 Contacts are adjustable for use in loose fitting doors.