1.5 EFeature Manual 79An external relay device and DPH card• The port of the DPH4 card to which the relay is connected must be assigned through systemprogramming as a relay port (not a door opener port).• Some devices may be unable to communicate correctly with the PBX. Confirm compatibility with themanufacturer of a device before installing it.• Each external relay port has a COS assigned. This and the COS of an extension determine theextension users who can use External Relay Control.• The length of time that a relay is turned on can be specified separately for each relay through systemprogramming.• If the same or another extension tries to access an external relay that has already been switched on,the timer for that relay is reset.Installation Manual References2.5.1 DPH4 Card (KX-TAW84861)2.8.1 Connection of Doorphones, Door Openers, External Sensors, and External RelaysProgramming ReferencesPC Programming Manual2.7.10 [1-1] Slot—DPH Card Property—For Output (EIO)—Device Type2.8.8 [2-6-1] Numbering Plan—Main—Features—External Relay Access2.8.11 [2-7-1] Class of Service—COS Settings—Extension Feature—External Relay Access2.11.6 [5-4] External RelayPT Programming ManualNoneFeature Manual References1.3.16 COS (Class of Service)Operating Manual References1.3.27 External Relay1.5.9 External SensorDescriptionExternal sensing devices, such as security alarms or smoke detectors, can be connected to the PBX. Whenthe PBX receives input from a sensor, a call is made to the preset destination, alerting the extension user.The available destinations of a sensor call are as follows:[Available Destinations]Destination AvailabilityWired Extension (PT/SLT)
