Professional Way

[kathekas]

When installing PIR's in the corners of rooms, invariably the corner is not square.

Of course its very easy to twist the backplate of the PIR to fit the corner and misshape the backplate of the PIR.

My question is how do professional resolve this?

I did wonder about just putting screws down one side, but this may make it subject to vibration.

I also considered padding out using washers, but this could be unsightly.

Thanks.

 

[Hoover]

Once the black plate is misshaped then the front cover wont fit properly.

Each manufacture has recommendations on correct installation of there devices.

Using fixing brackets (note some fixing brackets effective disable the back tamper).

Using one side of the detector back plate in several positions so that it is very secure and could only be affected if its hit hard.

If you don't follow the manufacturers recommendations it could invalidate any warranties.

 

[sparkymarka]

Don't overtighten, and use screw point across from each other, not corner to corner.

 

[EightyTwo]

Put two screws in one side only. As Hoover says, if you twist the back, the front won't fit (easily). There's nothing wrong with leaving a few millimetres of gap down one side. But try and make sure that the PIR top and bottom are horizontal.