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In This Section
About the 7845CZ
System Features
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About the 7845CZ
The 7845CZ is the subscriber end of the AlarmNet C reporting system. It is comparable to a
digital communicator, but instead of transmitting signals over the telephone lines, it
transmits radio signals to the central monitoring station using the control channel of the
AMPS cellular phone network. This allows faster and more secure reporting and greater
coverage.
The 7845CZ is compatible with existing installations using ADEMCO equipment or other
control panels. It can be used in conjunction with digital communicators on the same system
to provide redundant reporting.
The 7845CZ Transceiver uses the control channel of the Advanced Mobile Phone System
(AMPS) cellular network to report subscriber alarms and system status messages. It
operates on either the "A" or "B" side of the cellular network without using a voice channel.
Because alarms are transmitted only on the control channel, a true "phone call" is never
placed. This eliminates delays due to busy or saturated cells where no voice channels are
available.
The 7845CZ is compliant with the MicroBurst standard for packet-based control channel
cellular communication. Alarm and status packets are transmitted from the subscriber to a
local cell where they are identified and then routed using SS7 to the AlarmNet Control
Center. The AlarmNet Control Center then logs the alarm and routes it via RF to the
appropriate AlarmNet-A or AlarmNet-M equipped central station.
System Features
Hardware Features
• Total of six inputs mapped to seven reporting zones.
•Five, hardwired, voltage triggered input zones that are programmable for inverted or
non-inverted operation.
•Two zones mapped to one physical input that detect both burg and fire (steady and
pulsed) signals when connected to the bell output of a control panel. These inputs can be
2K EOL Supervised, voltage triggered, or ground triggered.
• Open collector programmable radio fault output in Zone Mode.
LED Indications
• Received Signal Strength Indication (RSSI), displayed on a 5-position bar graph.
• Three message status and radio status LEDs.
General Information
S E C T I O N
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