Viking LDB-3 Advanced Loop and Ring Detect Board

Features: Ideal for monitoring line status and providing a visual indication of it On/off switches for ring detection and off hook/loop detection Detects ring voltage and loop connect Screw terminal connections Wall mountable with foam tape (included) or screws (not included) Switched 12V DC output (follows relay activation for powering strobe lights, cameras, etc.) One set of (NO) normally open and (NC) normally closed relay contacts provided Disable input, ideal for use with two-button emergency phones, will not activate relay on "Info" calls 12V DC power adapter included Minimum Loop Current: 15 mA Disable/Info Switch Input: 50mA/80mW maximum Ringer Equivalence: 0.5 A REN Connections: 10 pin screw terminal block