Viking Electronics LDB-2 Loop/Ring Detect Board for Ring and Line In Use Contact Closures

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 12 VDC power adapter, and can also provide 12V DC power through its auxiliary 12V DC output terminals.

• 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

• 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
• Made in the USA
• 1 Year Warranty

• 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