How do the digital inputs of the ekey control units work?

The digital inputs are switched via a dry-contact relay for the set relay switching duration using a door button or similar.
The ekey dLine control unit has one digital input and one relay, the ekey control unit DRM has two digital inputs and two relays. With the latter, digital input 1 switches relay 1 and digital input 2 switches relay 2. For this, the input of the door button must be connected to the ekey control unit DRM via IC and the output of the door button must be connected to digital input 1 or 2 of the ekey control unit DRM.
For details on wiring, refer to the relevant wiring diagram in the Download Center.