A key is used outside to lock and unlock
the door. A thumbturn is used inside to
lock and unlock the door.
Double
Cylinder
Requires a key on both the inside and
outside to lock and unlock the door.
Captive
Double
Cylinder
Combines the best features of a single
and double cylinder deadbolt.
Mechanical combination deadbolt
Mechanical
combination deadbolt -Using mechanical pressed
button to unlock the deadbolt.
Digital
combination
deadbolt
Digital
combination deadbolt is a keyless lock that
uses different type of methods to operate
the deadbolt.
for example: digital buttons, fingerprints
and more.