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2.0
Overview
2.1
SAFECOM Overview
SAFECOM is a long-range telemetry communications system for monitoring remote security alarm panels which
are located at a customer site. The SAFECOM system utilizes specially designed telemetry transmitters and
receivers to provide a secure and reliable radio communications link between remote alarm control panels and a
Central Monitoring Station. The information provided to the Central Station allows security personnel or local
authorities to respond immediately and appropriately to all alarm events detected at the customer site.
The SAFECOM system is listed by Underwriters Laboratories (UL) as an "AA" rated security device for telemetry
reporting, RADIO as PRIMARY, of Burglary and Fire Alarm events and information.
The SC9000 Receiver acts as the nerve center of the SAFECOM System. The SC9000 Receiver uses the
SAFECOM ST1000 receiver software for system control and processing. The SC9000 communicates with
Remotes via the RF2000 Radio Modem. Selected system events are permanently recorded on a Micronics dot
matrix printer.
A Radio Communicator is a SAFECOM SC4000 Communications Panel which is located at a customer site;
commercial or residential. The Remote intercepts ALL of the Alarm Panel Digital Messages from the Digital
Alarm Communicator (DAC or DIALER), digitally encodes it, and performs a full data transfer via a RADIO
communications link to the Base Station's SC9000 Receiver as the PRIMARY routing.
The digital data is processed by the SC9000 Receiver with a virtual instantaneous transfer of alarm information
to a Central Monitoring Station's Automation software. Normal routing of the Digital Alarm Messages is via a
RADIO communications link between a Remote and the SC9000 Receiver; then to an Automation software via
an RS232 interface cable.
The SC9000 Receiver can supervise, monitor, and control up to 2,500 Remotes through two-way RADIO
telemetry communication in the redundant configuration. The receipt of each message or supervisory poll that is
transmitted, is validated by the receiving site. The receiving site will transmit an acknowledge message in
response.
Supervisory polling is performed by the SC9000 Receiver for each Remote to verify two-way RADIO telemetry
communications and the operational condition of the Remote. The polling interval is individually programmable
for each Remote. The SC9000 Receiver can monitor 240 unique Alarm Panel Event Codes from each Remote.
The Remote can also monitor the Normal/Open/Short status for four (4) Auxiliary Inputs. These input lines allow
End-Of-Line (EOL) supervisory loop status monitoring of four auxiliary devices. Any change of status to the
inputs is immediately reported to the SC9000 Receiver or routed to initiate fault follower behavior for the Auxiliary
Output relays. The box tamper switch is permanently connected to an auxiliary input line for continuous
monitoring of panel door open/closure status.
There are also four (4) 2-position contact relay controlled Auxiliary Outputs. The Base Station operator can
remotely control the On/Off status of an auxiliary device by sending RADIO commands, from the SC9000
Receiver, to Enable or Disable the output relays. The Remotes may also be programmed to automatically Enable
or Disable the output relays in response to an Auxiliary Input or Remote system Failure condition.
The SAFECOM system functions strictly in a supervisory capacity when interfaced with an existing alarm system.
The Remotes are intercept/delivery systems which are designed for easy installation and interface with an alarm
system; just connect the alarm panel telephone output cable to the Remote phone terminals. NO modifications to
the existing alarm system are required! The normal operation of the existing alarm panel and security system is
NOT affected in any way. The existing detectors and initiating circuits still report the status of items directly to the
alarm panel.
The RF2000 and Remotes are normally configured to transmit and receive (Tx/Rx) in the 450-470 MHz UHF
Radio Frequency (ElF) range. Additional frequency Ranges are available upon request. Nominal reception range
is dependent on the extent of environmental effects, i.e. propagation, and the proximity of the transmitter/receiver
to dense foliage and structures. The SC9000 radio Comm Port can drive a single RF channel or with the
installation of a SAFECOM 4 or 8 port Expander Board it can drive from 1 to 8 independent RF channels.
To ensure alarm events are reported by the Alarm Panel Dialer, when it seizes the communications line and
starts dialing the programmed phone number, all SAFECOM Remotes are configured with a FALLBACK feature.
In the event of a Remote RADIO, hardware, software, or total power failure the digital alarm messages are
automatically routed via a telephone communications line to a digital receiver; then to the Automation software
via an RS232 interface cable. This provides a life safety BACKUP communications link for routing of Alarm Panel
messages to the Central Monitoring Station.
The SAFECOM IT1500 Installation/Sales Tool tests for a standardized signal level, at the customer site, from the
RF2000 Radio Modem. Through this testing, by a Sales or Service Representative, the potential for valid two-
way RADIO communications can be confirmed for a Remote and the SC9000 Receiver prior to the installation of
a SAFECOM system.
© 2004 Bosch Security Systems
SC720/SC820 Operation and Installation Guide
Page 7
SC720/SC820
Overview
90007-201C
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