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System 4000DCU Terminal Connections Dry ContactsWith jumper between 1 & 5 removed the DCU4000RBM has 1 input and 2 dry outputs. The singleinput is for an N.O. momentary switch which is used to remotely unlock a door. The 2 dry ouputs,with jumper removed, are common number 5 with the normally open being number 9 and thenormally closed being number 11. The regulated 12 or 24 Vdc is connect to terminals 1 and 2 with 1being plus (+) and 2 negative (-). It is recommended that the DC input voltage and the outputsbe fused. The slide switches on Relay Module must be toward the Lock Electronics Module.Page 43