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. 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 Made in the USA 1 Year Factory Warranty Specifications: 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: -26deg C to 54deg C (-15deg F to 130deg 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