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GUARD-IT monitors four input channels. Each channel can be configured for an analog or digital signal input. The system utilizes the public telephone network as a basic medium for transmission of alarm messages and status calls. 

It is field-programmable by the user at the system’s control panel via a standard touch-tone phone handset.

Upon detection of an alarm condition, GUARD-IT automatically calls a list of up to eight preprogrammed phone numbers over the standard dial-up telephone network, calling until it gets an acknowledgement. 

When a connection is made, the system reports the station identity and the specific alarm condition in the form of a digitally prerecorded voice message. 

In addition to standard phones in office, plant or home, the alarm calling sequence can also include calls to pagers, cellular phones and voice mail.

An alarm is acknowledged simply by pressing a button on the called phone. When acknowledging an alarm, a built-in microphone permits the caller to listen for background sounds at the site. 

The user can also call the system from any remote phone for a status report of all points being monitored.
Features
  • Real-time alerts
  • Operating integrity
  • Anytime access

Specifications

Power Requirements

  • User supplied 10-14 Vdc, 500 mA max

Power Consumption

  • 200 mA Min. standby
  • 500 mA Max. active

Power Failure

  • Automatic alarm for external power failure

Battery Charging

  • Precision voltage controlled, automatic rapid recharge after drain

Universal Signal Inputs

  • Digital Inputs: Open contacts see 5 Vdc, closed contacts see 5 mA DC.
  • Analog Inputs: 4-20 mA, single-ended. Max. voltage drop 10 Vdc. Resolution 0.2 %, absolute accuracy 0.5 %.

Local Alarm Relay

  • Transistor output for TTL or relay drive (500 mA 24 Vdc max) activated during unacknowledged alarm

Power Supply

  • UL Class 2 120 Vac 50/60 Hz adaptor

Backup Battery

  • Internal 6 volt, 4 AH gel cell provides 20 hours operation during power failure.

Documentation

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