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At some locations, such as gated communities, it will be necessary to provide access to the mail
carrier so that they can deliver the mail. Mail carrier access will be provided by the installation of an
Arrow Postal Lock. This is the same lock that the Post Office uses for gang mailboxes. These locks
are not available to the public. The installer or the building owner/manager will have to call the Post
Office and arrange for the installation of this lock into the telephone entry system. The 1802, 1803
and 1810 units are all pre-wired to accept the installation of the postal lock.
The 1808 unit cannot accept the postal lock. If you are using the 1808 and need postal service
access, use the DoorKing Postal Lock Box (P/N 1402-080).
Prior to installation of the postal lock, be sure power to the telephone entry system is turned off.
1. Remove the hole plug on the faceplate of the telephone entry system.
2. Cut the wire tie wrapped around the micro switch next to the postal lock access hole.
3. Remove the two hex nuts from the postal lock-mounting studs. Mount the postal lock
on the two studs and secure with the hex nuts.
When the lock is installed, check to be sure that the pawl of the lock, in its extended position, is
depressing the micro switch (the micro switch is wired normally closed). When the mail carrier inserts
his key and turns the postal lock, the pawl is withdrawn and the micro switch will activate the relay
that has been programmed for this function for the programmed strike time.
1.3 POSTAL LOCK INSTALLATION