When an extension user enters the External Relay Control feature number, the specified relay turns on for apreprogrammed length of time. When this timer expires, the relay turns off automatically. This gives the PBXsimple control over other equipment, allowing an extension user to, for example, activate an alarm from hisextension.If the relay cannot be accessed (for example, because use is not permitted by COS, or the port is not in service),a reorder tone will be heard at the extension.Conditions• Hardware Requirement:An external relay device, OPB card and EIO card• 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 the extensionusers 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, thetimer for that relay is reset.Installation Manual References3.7.1 OPB3 Card (KX-NCP1190)3.7.3 EIO4 Card (KX-TDA0164)3.9.1 Connection of Doorphones, Door Openers, External Sensors, and External RelaysPC Programming Manual References4.9 [2-6-1] Numbering Plan—Main—Features— External Relay Access4.12 [2-7-1] Class of Service—COS Settings—Optional Device & Other Extensions— External Relay Access7.6 [5-4] External RelayFeature Manual References3.1.21 COS (Class of Service)Operating Manual References1.3.27 External Relay5.1.9 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:Document Version 2009-12 Feature Manual 975.1.9 External Sensor
