Fibaro Motion Sensor design flaw?

[fergalmccarthy 5]

I'm just wondering if anyone else has had this issue. Yesterday I came home to a broken Motion Sensor on the floor, the cleaner had been in and I can only assume she banged the door which caused the sensor to fall. I noted how loose it was when installing and the problem is exacerbated when you use a screw to mount the holding bracket as it seems to pull the arms from the ball.

I understand that this is to allow it to detect tremors, a feature I have no interest in personally and the closing of a door generally triggers the tamper alarm, and I would imaging mounting over doors is quite common.

Does anyone else feel the arms and hold of the ball in the mount is too loose or is it just me ?

[dawiinci 5]

Feels pretty strong in my case. Maybe the clamp was bent?

[petergebruers 1,268]

It takes about twice the force to tap the spacebar on my computer, to dislodge the sensor. Not very much force if you ask me...

 

I see only one option. The option that fixes cars and repairs trains: duct tape! 

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[Guest Kuuno]

is the original screw used? sometimes installers use their own screws and they have bigger head than original and makes holding the sensor weaker...

[petergebruers 1,268]

is the original screw used? sometimes installers use their own screws and they have bigger head than original and makes holding the sensor weaker...

 

That's great thinking! Really! I can indeed see how that could lead to problems... And in my case it's partly true, but the head of my screw is the same. I actually thought about the weak clamping as soon as I opened the package.

Nevertheless... nice thinking!

[chaicka 195]

Over here, it seems the Fibaro motion sensors are supplied with M6 tapered screws which I find too big (it does not sit 100% flush into the tapered mould of the plastic clamp). I had to source for slightly smaller than M6 tapered screws which flushes well with the tapered mould and the plastic clamp seems having a better grip of the motion sensor.