ELK-930 Door Bell & Telephone Ring Detector from ELK Products
| Doorbell
& Telephone Ring Detector |
 |
| ELK-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. |
| The ELK-930
Doorbell Detector monitors the current draw of a doorbell and produces an open
collector output when the pushbutton is pressed and the doorbell
draws 900mA or more. This open
collector output can be used to trigger an automation controller
input that utilizes high to low switching (pull to ground) for
activation. The ELK-930 Telephone Ring
Detector monitors the voltage on the telephone line and
produces an open collector output (pull to ground) when the
telephone ringing voltage is approximately 50 Volts or greater. The
output follows the ringing pattern. |
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.
• Lifetime Limited Warranty.
|
• Max Input on Doorbell Boards:
• Max Output:
• Doorbell
Detection Current:
• Size: |
24 Volts AC
Nominal
40mA @ 12 Volts D.C.
900mA min.
3.4" x
2.75" x .625"
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