Specifications
Automatic Telephone Dialer Specifications 
RACO Guard-It Model GI-4 Autodialer 
Introduction 
The RACO Guard-It Model GI-4 Autodialer monitors four input alarm channels and also internally 
monitors its AC power. The four input channels can be configured as digital (dry contract) or 
analog input. The Guard-It includes digitally recorded programming support messages, station 
identification message, power failure alarm message, and four default alarm messages. 
Application specific, user recorded messages may be digitally recorded to replace the default 
station identification message and four default alarm messages. 
Automatic Telephone Dialer Specifications 
1.0 
General 
The automatic dialer shall be a self-contained, solid state device. The dialer shall continuously 
monitor the presence of main power and the status of four independent alarm input channels, 
which may be programmed for N.O. or N.C. dry-contact (or logic levels) inputs or for 4-20 ma 
analog inputs. 
Each of the four input channels shall be programmable to alarm on any of the following: OPEN 
circuit, CLOSED circuit, or analog HIGH and/or LOW alarm set points. Alarms shall be capable 
of independently being programmatically turned OFF. 
On AC power failure (for dialer with backup battery option) and/or on violation of alarm criteria for 
any of the four alarm inputs, the dialer shall go into alarm status and begin alarm dialing and 
alarm notification. Dialing shall continue until the alarm(s) is(are) acknowledged. 
Unless alarm notification is by pager, notification shall be by playback of high resolution digitally 
recorded alarm voice messages. Each alarm shall cause the playback of its specific custom 
message. Analog alarm messages shall include the percent-of-full-scale of the analog inputs. 
Alarm acknowledgement shall be accomplished by pressing the 9-button on the telephone touch 
pad or by using the switch on the dialer front panel. Call-back alarm acknowledgement capability 
shall be available in the event that alarm notification is by numeric pager. 
The dialer shall re-alarm and resume alarm dialing after a programmable period of time has 
elapsed after an alarm(s) has been acknowledged but the fault(s) causing the alarm(s) not 
remedied. 
The dialer shall respond to inquiry calls from any telephone and shall provide a status report of 
alarm input point status (OPEN, CLOSED, or analog PERCENT) and main power status. The 
report shall include alarm status for each point (normal, alarm, and alarm acknowledged but fault 
not remedied). A warning message shall be provided if no phone numbers have been 
programmed for alarm notification or if the switch on the dialer front panel is set to DISARMED 
rather than READY. 
1.1 
Phone Link 
The dialer shall be FCC approved. It shall operate on a standard dial-up rotary pulse or touch 
tone telephone line and shall be capable of calling from one to eight phone numbers, each up to 
60 digits in length. Dedicated or lease phone lines shall not be required. 
The following telephone interface features shall be included: 










