User Manual

Figure 1
Introduction
The Messenger system is a hybrid solution to networking locks in a hospitality environment.
Each door lock has a low power, limited bandwidth, and short-range digital radio system.
The lock uses this Messenger radio to communicate use history and operating status to a
local wireless Messenger transceiver hub, which is capable of communicating with as many
as 64 individual door locks. The transceiver hubs are all connected to a host PC via a wired
or wireless Ethernet network. The host PC acts as a server for both the Saflok Windows
6000 operating system and the Saflok Messenger database.
Communication between the Messenger database and the locks is two-way; either the host or
lock initiates messages. Messages originating at the lock are transmitted directly to the
transceiver hub, which is continuously powered and predominantly in the receive mode.
The transceiver hub then acts as a gateway device, decoding the wireless message from the
lock and transferring it to the Ethernet infrastructure. Messages originating at the host are
sent to the transceiver hub via the Ethernet and stored in a memory buffer. The lock wakes
up periodically and checks the transceiver hub for stored messages, and then returns to
“sleep,” enabling long life from the primary batteries operating the Saflok.
The radio device is installed in the upper
plastic end cap of the inside trim (See
Figure 1 and 2.) and connects to the locks
PCB with a four-wire harness that
provides both power and serial
communications. (See Figure 3.) When
the lock is produced at the factory, the
radio is plugged in, tested, and then turned
off to conserve battery power during
transit and construction. The radios shall
be left in the off position until the door
lock and network infrastructure
installations are complete.
Figure 2
Figure 3