FBII XL-4 Owner's Manual page 12

If the system is NOT READY, one of the following actions
are required if you want to ARM the system;
- Make the zone(s) ready. Detemine wMch zones are not
ready by looking at the keypad and perform what is necessary to
ready the zone(a). For example if zone 12 represents the Bedroom
Wndow, then closing the window should make that zone ready.
or
- Bypass the zone(s) not ready. Bypassing should only be
performed if the zone cannot be made ready or intentionally will
remain not ready. Zones that are bypassed are not proteaed when
tha system is armed.
NOTE: It is possible to arm the systam without the back-up
battery wnnected.
NOTE: In a commercial burglary alarm installation (model
XL-4B or XL-4C) a brief pulsing audible output is providad by the
keypad to indicate successful receipt of the closing signal at the
Central Station. If not heard, CALL FOR SERVICE.
In a commercial burglary installation (mdel XL-4B) the bell will
energize briefly after ent~ of the user code during arming. If not
haard, CALL FOR SERVICE.
XL4 Wnem Mmual Page12