Re: Glass break sensors: FG1608 vs Shatterpoint 5620?

[Jim <alarminex@xxxxxxx>]

On Monday, June 29, 2015 at 9:57:16 AM UTC-4, maxwe...@xxxxxxxxx wrote:
> No, he is showing how easy to set it off as a false alarm with jiggling k=
eys and some thumping.
>=20
> In general, security systems are decades out of date in their technology,=
 because there are not enough DIYs and independent tests and reviews.

Glass break detectors (most) are designed to listen for a "thump" and then =
if he frequency of breaking glass occurs within a specified period of time =
... the unit will trip.=20

Once the unit has tripped this unit apparently does not need the "thump" ag=
ain to trip if it hears more high frequency. If he would wait some period o=
f time after the initial "thump" and jangling of the keys causing the unit =
to trip, the unit should reset to normal and again require the "thump" prio=
r to "hearing" the high frequency.

ALSO, jangling the keys an inch away from the unit is not real life conditi=
ons.=20

For instance, if you trip a typical motion detector, after it has been dorm=
ant for a period of time it will usually take a longer period of time to tr=
ip it the first time but a shorter period of time once it's been initially =
tripped. That is ......  if you walk into the protected area again, you wil=
l be caught sooner ..... then it took the first time.=20

It's called quiescence.

Likewise, you don't test a motion detector by walking past it 6 inches away=
.