Re: Napco Wireless Gem-PIR

["Roger" <rumble@xxxxxxxxxxxxxxxxx>]

"jjsmd" <jjsmd@xxxxxxxxx> wrote in message
news:1119877114.703390.123870@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Thank you all for your replies.
>
> I did not realize there was a 2 or 3 minute dormant period.
>
> Thanks
>
1-way wireless detectors do this to maximise battery life. Some wireless
detectors actually increase this delay after each activation upto a maximum
delay usually documented somewhere (but sometimes not). So, after the first
activation the detector may go to sleep for 30 seconds, if another
activation occurs within that 30 seconds then the detector goes to sleep for
1 minute and so on. Sometimes up to a few minutes. This can make arming the
panel a lengthy process as the detector may not be active after arming for a
few minutes. In cases such as these for maximum security the property owner
usually has to wait around a couple of minutes after arming commemces for
the detectors to be fully operational.

In low traffic areas that detectors sleep time is kept low on variable delay
systems.

2-way wireless does not suffer from this problem as the alarm panel can tell
the detector to wake-up or go to sleep depending on the arm status of the
panel. This is usually immediate regardless of the number of activations at
the detector prior to arming. Conversly, when the panel is disarmed the
detectors never activate (unless they are 24h types). 2-way systems conserve
battery power in this way and generally get longer battery life as a result.

Ooops. Very long reply. Sorry.