Doorbell & Telephone Ring Detector

Elk Doorbell & Telephone Ring Detector Elk | Part Number: ELK-930

The ELK-930 has three functions. It can sense ring activation from one of two doorbell buttons and one telephone line. It conveniently shunts the current and voltage and makes an open collector (pull to ground) output which can trigger an automation controller, timer, relay, etc. The circuit is pre-scored so that individual detectors can be snapped (separated) from each other.

The ELK-930 Doorbell Detector keeps track of the current draw of a doorbell and makes an open collector output when either the doorbell is pressed or the doorbell draws 900mA or more. This open collector output can trigger an automation controller input that uses high to low switching (pull to ground) for performance. The ELK-930 Telephone Ring Detector keeps track of the voltage on the telephone line and makes an open collector output (pull to ground) when approximately 50 Volts or greater for the telephone ringing voltage is needed. The output follows the same lines as the ringing pattern.

FEATURES:

Doorbell

• Senses Doorbell Activation Current.
• Inputs for Two Separate Pushbutton Locations.
• No Frequency Wave Disturbance With Lighted Pushbuttons.
• Produces an Open Collector Output.
• Receives Power from the Doorbell Transformer.

Telephone

• Senses Telephone Ringing Voltage.
• Provides an Open Collector Output that follows the same lines as the ringing pattern.
  
• Small, Compact Size.
• Comes with Dual Sided Foam Tape For Mounting.
• Packaged in Reusable Poly Storage Box.
• Includes a Lifetime Limited Warranty.

SPECIFICATIONS:

• Maximum Input on Doorbell Boards reaches 24 AC Nominal Volts
• Max Output: 40mA @ 12 Volts D.C.
• 900mA is the minimum Doorbell Detection Current.
• Size: 3.4" x 2.75" x .625"

View the ELK-930 Instruction Manual in Adobe Acrobat format (right-click to save document to your hard drive)

View a sample ELK-930 to ELK-960 Hookup in Adobe Acrobat format (right-click to save document to your hard drive)

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