![](https://gqt.gr/421/dc111-carrier-surface-overhead-door-mount-contacttriple-biased.jpg)
Surface - overhead - door mount contact - triple biased
Security policy (edit with module Customer reassurance)
Delivery policy (edit with module Customer reassurance)
Return policy (edit with module Customer reassurance)
Surface mount overhead door mount contact, wired - armoured cable, 60mm standard operating gap, triple biased. The triple biased reeds of the DC111 magnetic contact make defeat of the switch with external magnets virtually impossible. For added security, magnetic field tamper and pry tamper are standard features.
Surface - overhead - door mount contact - triple biased