LDB-2
LDB-2
Ring/Loop
Detector
December 15, 2011
The LDB-2 Ring/Loop Detector monitors an analog phone line
for ringing or an in-use condition. A built-in relay can be activat-
ed 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 12 VDC power adapter, and
can also provide 12V DC power through its auxiliary 12V DC
output terminals.
Provide a Contact Closure on Ringing
or Off-Hook
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• 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 one year warranty
• 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
Power: 120V AC to 12V DC adapter provided
Dimensions: 74mm x 53mm x 25mm (2.9” x 2.1” x 1.0”)
Shipping Weight: 0.4 kg (0.86 lbs)
Environmental: -26° C to 54° C (-15° F to 130° F) with 5% to
95% non-condensing humidity
Contact Rating: .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
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TECHNICAL
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