Security Door Controls SDC PTH-4Q-DPS Four Conductor Power Transfer Hinge, Dull Chrome, 4.5" x 4.5", Concealed Door Position Switch MSRP: Was: Now: $132.00
Security Door Controls SDC 1561ITCM Concealed Mortise Lock, Integrated Electronics, 2000lb, Standard Mounting Armature Kit MSRP: Was: Now: $527.75
Security Door Controls SDC DPS-11-2 Door Status Switch, Electromechanical Ball, DPDT MSRP: Was: Now: $49.99