In article ,
Bill Wright wrote:
On 04/02/2018 21:56, dennis@home wrote:
On 04/02/2018 21:12, Bill Wright wrote:

A bellbox with a flashing LED tells a burglar that you don't have a
real alarm.

Bill

Then he finds out that he was wrong when the alarm goes off.

But the purpose of the alarm is deterrence. Once they're in the damage
is done. The psychological effect on the resident is the main thing.

Our local SCO said "Burglar alarms alarm burglars"

Burglars do regard a flashing bellbox as a possible bluff, and are more
likely to enter the property than if they see a normal bellbox.

It's the same with CCTV cameras. Never ever install a camera that looks
like it might be a fake, even if it isn't.

Bill

--
from KT24 in Surrey, England