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  GMC 4 Zone fire alarm card - Add on card for Guard MC 2
 
This is an add on card to convert Guard MC-2 to Guard MC-3 adding 4 extra zone for fire.

Microcontroller based design

  Fire Zone - Four Zones (EOL is 4K7 O)
  Fire Sensors - 2 wire (supply 11.0 to 15 volts)
  Response Time - 500 m seconds
  Detection Method - Current sensing
  Power Supply Input- 10.8 V to 15 V DC
  Operating current - 40 ma. approx.*