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Doorbell & Telephone Ring Detector

Item #:930 
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Elk Products 930
The ELK-930 performs three functions. It can detect ring activation from one or two doorbell buttons and a single telephone line. It conveniently isolates the voltage and current and produces an open collector (pull to ground) output which can be used to trigger an automation controller, relay, timer, etc. The circuit is pre-scored so that the individual detectors may be snapped off (separated) from each other.
  • Doorbell
    • Detects Doorbell Activation Current.
    • Inputs for Two Separate Pushbutton Locations.
    • No Interference With Lighted Pushbuttons.
    • Produces an Open Collector Output.
    • Powered by the Doorbell Transformer.
  • Telephone
    • Detects Telephone Ringing Voltage.
    • Provides an Open Collector Output that follows the ringing pattern.
  • Small, Compact Size.
  • Double Sided Foam Tape Provided For Mounting.
  • Packaged in Reusable Poly Storage Box.
  • Max Input on Doorbell Boards: 24 Volts AC Nominal
  • Max Output: 40mA @ 12 Volts D.C.
  • Doorbell Detection Current: 900mA min.
  • Size: 3.4" x 2.75" x .625"

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ELK PRODUCTS INC
Elk Products 930
Doorbell & Telephone Ring Detector
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