Glass shock sensor on which bit?

[Yorkshirebloke]

Hello all.
Hopefully a nice easy one for you.....
I've got 2 windows in my lounge. One is a bay type window with the two sides opening.
The other is a flat, fixed, non opening window but made up of 3 parts. The pics below aren't of my windows but are basically the same.

Now, how many shock sensors do i need? Will 1 suffice for the non opening ones, or do they need a sensor on every panel?
As for the opening ones, I was looking at some of the shock sensors with the contact break with it. Are they worth it or is it overkill?

Cheers
Alex

 

[footprints]

We had shock sensors fitted to our back door, we had contact switches added as if we forgot to lock the door it could be opened without setting the alarm off. Less of a problem I would say with windows if they have handles that require the glass broken to reach them, easy running sash ones might be more of a risk.

 

[Handymanjo]

Both windows would require 2 shock sensors per window.
If you have a hard wired alarm system then you would need to cable to each device.This can be unsightly .possible to put cable in micro trunking,if not you could chase wire in and plaster over when you decorate.
If system is a wireless system it is just a case of sighting the shock sensor in the correct position .

 

[Yorkshirebloke]

Ooof. Bugger me that's gonna get expensive then. 6 shock sensors to go across 2 windows..... ouch.

Thankfully cabling is ok, I'm going to put some oval conduit into the wall as I'm doing quite a bit of chopping and changing throughout the house so that bits easy enough. I've got a roll of some CQR cable on its way for it.
It's just a bit gutting that it'll need so many sensors when one PIR would have done lol.

 

[Yorkshirebloke]

Guys, has anyone used glass break sensors? Are they any good?
Just been looking at the Honeywell ceiling one as just a point of reference, and the way the 2 sets of Windows are in my lounge it would cover both of them easy enough, and its quite cheap at circa £25.
Would this work for me?

 

[turanafon]

why are you not fitting not a PIR ?

 

[Yorkshirebloke]

Because in a short while we will have a dog, and from what I understand, pet specific PIRs aren't very good.

 

[Nintendofan]

why are you not fitting not a PIR ?

A PIR will only alert once an intruder has broke into the building, perimeter sensors (hopefully) alert before an intruder enters the building.

 

[Yorkshirebloke]

Totally agree. They make installation bloody easy and quick though! Cheaper too.

The cost of shock sensors are a bit prohibitive.... downstairs I need 9 and then 4 shock/door sensors. Starts getting a bit expensive, and we live in a really low crime rate area and have 6 houses around us that are worth LOTS more than ours and none of them have alarms (well certainly no visible bell bix whicj woukd suggest one or not) so this is just a bit of a "dont bother pal, tberes easier pocking over the road" sort of thing.