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Loop and/or Ring Detector

Model: LDB-2

  • Detects ring voltage and loop connect
  • Screw terminal connections
  • Wall mountable with foam tape (included) or screws (not included)
  • Auxiliary 12V DC output
  • Adjustable time-out for relay closure
  • Two sets of relay contacts provided
  • Selectable NO (normally open) or NC (normally closed) relay contacts
  • Limited two year warranty
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Product Details

The LDB-2 Ring/Loop Detector monitors an analog phone line for ringing or an in-use condition. A built-in relay can be activated when either of these conditions are detected. This is ideal for monitoring line status or for providing a visual indication of such.

When monitoring for ring, an internal pot can be adjusted to allow the relay closure to stay on steady, or follow standard ring cadence.

The LDB-2 comes complete with a 12V DC power adapter, and can also provide 12V DC power through its auxiliary 12V DC output terminals.

Applications

  • Control a strobe light for ring indication
  • Provide relay closures on ring and off-hook
  • Trigger a security camera
  • Trigger a tape recorder
  • Phone “In Use” indicator

Features

  • Detects ring voltage and loop connect
  • Screw terminal connections
  • Wall mountable with foam tape (included) or screws (not included)
  • Auxiliary 12V DC output
  • Adjustable time-out for relay closure
  • Two sets of relay contacts provided
  • Selectable NO (normally open) or NC (normally closed) relay contacts
  • Limited two year warranty

Specifications

  • Power: 120V AC to 12V DC adapter provided
  • Dimensions: 2.9” x 2.1” x 1.0” (74mm x 53mm x 25mm)
  • Shipping Weight: 0.86 lbs (0.4 kg)
  • Environmental: -15° F to 130° F(-26° C to 54° C) with 5% to 95% non-condensing humidity
  • Contact Rating: 0.5A @ 125V AC/1A @ 30V DC
  • Maximum Current Draw Auxiliary 12V DC Output: 350mA
  • Minimum Loop Current: 15 mA
  • Minimum Ring Voltage: 40Vrms
  • Ringer Equivalence: 0.5 A REN
  • Connections: 10 pin screw terminal block