26 REFERENCE & INSTALLATION MANUAL Enabling the ATZ feature allows you to install two detection devices per zone input terminal. Each detection device
will have its own zone, displaying zone status on the keypad and sending separate alarm codes for each zone. The
extra zones are recognized as described in Table 4 on page19 or in Figure 5-4 below. For more information on how
to connect to detection devices, please refer to Double Zone Inputs on page11.
When a zone is defined as a Keyswitch or a Fire Zone and the ATZ feature is enabled, the control
panel will disable the “doubled zone” .
Figure 5.4: Zone Recognition with ATZ enabled