Visonic GFD-30 Glass Break Sensor Audio Discriminator and Detector, White
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Visonic GFD-30 Glass Break Sensor Audio Discriminator and Detector, White

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Trigger Your Security or Alarm System in the Event of a Broken Window
  • Up to 50 foot audio detection radius range (varies based on conditions)
  • Coverage area up to 5000 square feet
  • Flush mount
  • LED indicator lights
  • Built-in tester

Item #: 74003

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Special Price: $40.00

List Price: $60.00

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  • Details
  • Specs
  • Reviews
  • What's Included
  • The Visonic GFD-30 Glass Break Sensor Audio Discriminator and Detector is a flush mounted, glass break audio discriminator sensitive to noises above a cutoff frequency of approximately 5 kHz. The unit is designed to fit into virtually any standard, single-gang electrical switch box. It can also be installed directly in to a prepared space in the wall without a box enclosure. The glass break sensor requires a hardwired 9V DC - 16V DC power connection. You can connect the Normally Closed Relay output to a normally closed detection zone of a home security system or integrate into a home automation system. A built-in potentiometer is located on the circuit board that allows you to set the optimum sensitivity to avoid false alarms triggered by things such as telephones an door chimes. The unit also features test and alarm LED indicator lights to help during the setup process.

  • Specifications
    Manufacturer Visonic
    Manufacturer Product No. GFD-30 or GFD-30 0-1893-0
    UPC 780245189301
    Acoustical Detection Range Up to 50 feet (15 meters) radius (adjustable- varies with room shape, acoustics, temperature and humidity
    Coverage Area Up to 5,000 Square feet (500 square meters)
    Cutoff Frequency 5 kHz (nominal)
    Microphone Electrical Condenser
    Electrical Voltage 9V DC - 16V DC (protected against reverse polarity)
    Current 20mA
    Relay Output
    • Normally Closed (failsafe)
    • 18 ohm resistor in series with contacts
    • Rating: 0.1A resistive / 30V DC
    Alarm Period 2.3 Seconds
    Indicators
    • "ALM" LED lights on alarm
    • "DET" LED lights to indicate effect of ambient noises on sensor
    Testing Built-in testet with ambient noise monitoring ("DET" LED)
    Operating Temperature 14° F to 122° F (-10° C to 50° C)
    Storage Temperature -4° F to 140° F (-20° C to 60° C)
    Dimensions 5.0" x 3.3" x 1.5" (125mm x 85mm x 39mm)
    Weight 6.3 oz (180g)
    Color White


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    • 1x -Sensor
    • 1x - Wall Plate
    • 2x - Mounting Screws
    • 1x - Owner's Manual
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