In case of an AC power failure or intervention the 1616 sends a AC Power Loss alarm and after the battery runs out a Battery trouble alarm. Even though the system is not armed when the Low Battery alarm is set the siren starts sounding for 5 minutes. After some time if the power is not restored the siren starts small beeps followed by long beeps. We had an intervention from the power company for 12 hours and the siren (not keypad) won't stop beeping for 30 minutes. Luckily the intervention was planned during the day and the neighbors we're not home. Can the siren be disabled or silenced fom keypad for Low Battery alarms on DSC 1616? Thanks.

We were able to successfully "learn" an old version of NX-650N with an external contact for garage doors. Used Zone 19, with no changes in basic characteristics. But then we cannot successfully "learn" the same model sensor (old version), a N-650N new version, and a TX-E201. The only difference seems to be the external contact setup. We have tried every possible zone type, every possible characteristic change, all three do the same thing: during learning they do the 1st ding when the tamper is activated (which gets us all excited), but when the tamper is released or cover replaced, there is a second ding, which apparently changes or neutralizes the learning process. The magnet opened or closed has no effect. Here is the really strange part: if we do not "unlearn" the transmitter, and tamper the transmitter, it causes an alarm. This has nothing to do with range. We did it in the same room as the keypad as well as out in the detached garage. And I thought this portion of the installation would be the easy part...