System Options MenuPage 541 zoneThe control unit starts a confirmed alarm if the intruder activates one or more zones(not on the entry route) after entering the premises through the final exit zone.2 zonesThe control unit starts a confirmed alarm if an intruder activates two or more zones(not on the entry route) after entering the premises through the final exit zone (usedfor DD243:2004 clauses 6.4.5) Note: This option is not available if you have selectedBS8243 for Confirmation Mode.Entry Keypad LockThis is available only when Confirmation Mode is set to DD243 or BS8243.The option determines whether the user can unset the system by entering an access codeafter opening the entry door. Select one of the following:OffThe user can enter an access code at the keypad after the entry door opens (usedfor DD243:2004 clause 6.4.4).OnThe user must unset the system by some means other than the keypad, such as aproximity tag or key switch (used for DD243:2004 clause 6.4.5 and BS8243:20106.4.5b).Note: This option has no effect if the alarm response (for either full set or part set) isset to Siren or Internal. In those cases, the user will still be able to unset the systemusing an access code. Entry Keypad Lock is intended for use when the system cansummon a police response.Sounder OnUnconfirmWhen the system is set, keypads and loudspeakers give the alarm sound when anunconfirmed alarm occurs.ConfirmWhen the system is set, keypads and loudspeakers do not give the alarm sound untila confirmed alarm occurs.Note: The control unit will not allow you to select Sounder on – Confirm at the sametime as Siren on – Unconfirm.Sounder and siren operationThe behaviour of sounder and siren operation is described in Table 6.Table 6: Sounder and Siren OperationSettings EffectSounder On Siren OnUnconfirm Unconfirm Unconfirmed alarm: keypads, loudspeakers and sirenssound immediately and run for the Siren Time (see page46).Confirmed alarm: the control unit restarts the alarm sound atall devices, which runs for the full Siren Time, even if thathad expired earlier.