Detectors/Devices MenuPage 28Exit Terminate ET (18)Use this zone type to terminate setting when the exit mode is Exit Terminate (seepage 44). This zone type is designed for a normally-open momentary switch.Note that this zone type is armed during the setting time, but inactive both while thesystem is set, and while the system is unset. If you apply the Chime attribute to thiszone, the system will give a chime tone when the zone is activated both while thesystem is unset and while the system is set.Lock Set LS (21)Use this zone type to complete setting when the exit mode is Lock Set (see page 45).This zone type is designed for a normally-open switch (one that is open when thelock is locked). Note that this zone type is armed during setting and when the systemis set.A Lock Set zone can take the Inverted attribute.Security SC (23)This zone type is intended for use if keypads are located in areas that are accessibleto non-authorised people while the system is unset. When a Security zone is active,the control unit disables the buttons on all keypads. The display and proximity tagsensor continue to function normally.If an authorised user presents a proximity tag to the keypad, the control unit activatesthe keys so that the user can operate the system. The control unit deactivates thekeys when that user is finished.The keypad buttons will work normally when the system is set.Tamper Return TR (24)This zone type makes it possible to monitor a tamper return wire from an externalsounder. The control unit monitors a Tamper Return zone at all times.When triggered in the unset condition, only internal sounders operate. Whentriggered in the set condition, the alarm response (see page 46) determines whetherthe external siren, strobe and communications also respond to the alarm.