Placing Loxone Tree Motion sensors

[Joakim Arfvidsson]

I'm wondering if there is a best practice on using the Tree motion sensors. Their ceiling mount is neat, but I wonder how to cover my rooms in a good way. Middle of room would provide decent coverage, except behind the door as you come in. Maybe I should place the sensor (M) in the picture, tucked into the lower right corner like a regular corner sensor? I think you also don't want a motion sensor to see outside of a room, triggering on people walking past.

[seb303]

Not used the Loxone sensors, but I have experience with other ceiling mount PiR sensors.

The door itself should be detected when opening, so I don't think you need to worry about the door creating a blind spot.

Worth having the sensor back from the doorway a bit, or even off to one side, to avoid triggering as you walk past the doorway (if left open).  But you can always mask off part of the sensor with some white electrical tape to decrease sensitivity in a specific direction.

[Joakim Arfvidsson]

Huh, that suggests placing it so that the door in fact blocks the doorway whenever open, to prevent detection outside.

I thought these sensors used infrared band exclusively too, so that a door may not trigger it?

On Thu, Dec 22, 2016 at 1:15 PM, 'seb303' via Loxone English <loxone-...@googlegroups.com> wrote:

Not use the Loxone sensors, but I have experience with other ceiling mount PiR sensors.

The door itself should be detected when opening, so I don't think you need to worry about the door creating a blind spot.

Worth having the sensor back from the doorway a bit, or even off to one side, to avoid triggering as you walk past the doorway (if left open).  But yu can always mask off part of the sensor with some white electrical tape to decrease sensitivity in a specific direction.

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[seb303]

On Thursday, December 22, 2016 at 9:22:53 PM UTC, Joakim Arfvidsson wrote:

Huh, that suggests placing it so that the door in fact blocks the doorway whenever open, to prevent detection outside.

I thought these sensors used infrared band exclusively too, so that a door may not trigger it?

They will sense the change in infrared radiating from objects too.  Everything emits infrared unless at absolute 0 temperature.

Perhaps you should test it with the sensors you have.  With my ceiling mount PiRs, they will trigger as the door is opened, before any line of sight to the person opening the door.

[seb303]

Also, check the datasheet for your sensors.  This should give an idea of the effective radius.  This is generally quite large.  For example, I have a 6.5m long hallway and this is covered easily by 2 ceiling mounted sensors.

[David]

Not used the tree sensors, but the normal Loxone sensors. They are good. As said already ensure movement picked up on entering room. I put mine to left or right of the door about 30 cms in. This ensures rapid switching on entry. However you need to consider the rest of the room. Look like you have a shower - and the sensors do not see well through glass. My shower is fully enclosed, so I have a temperature probe on the hot water to the shower mixer and use that to turn on the fan an simulate movement so the lights don't go out during a long shower. As already said try it out with some long cables and sticky tape before fixing. 

Good luck, David

[smartbusinesstools.be]

We installed many Tree and Air Loxone sensors. In my experience:

They will not detect door movement at all, so you have to position them to see a person as soon as they enter.

They will not detect movement behind glass:

In the offices on the right, the detector is 1m in from the glass door. In the meeting room on the left the detectors are 3m from the glass doors.

[Seb]

Hi does anyone know if these sensors are pet friendly, or can be configured to be pet friendly (just a couple of average size cats)? If not, are there any PIRs that can be recommended?