PIRs and table lamps

[ss]

I have a yale wireless alarm system with PIRs. Now when I go holidays it was my intention to connect a timer to a couple of table lamps obviously to come on for a few hours when its dark, would this set off the alarm? Similar question I have an outside LED floodlamp and although it doesnt point directly towards the internal PIR in a particular room it would show increased light on that window. I have aneighbour who has access should the need arise but dont want to have issues if I can avoid them.

Any thoughts?

[Fredxxx]

PIRs rely upon temperature rate of change and movement. A CFL bulb should only heat up or cool down slowly. I have never heard of a PIR sensor being sensitive to a stationary CFL light bulb.

Glass is opaque to long wave IR so no thermal energy from a flood light will pass through a closed window; again I see no problem.

[Brian Gaff]

Pirs usually monitor movement acros a matrix not changes in light surely, so I don't see a problem at all. Brian

[meow2222]

PIR lenses turn movement across the scene into changes in IR/light level seen by the sensor.

IME PIRs sometimes do react to a light switching on in their field of vision, sometimes not.

I'd guess that shielding pir's direct view of the lamp would probably fix it. Guess.

NT

[ss]

Thanks all for replies, I guess I should set it up and test before I go on hols. The neighbours are early bedders and last thing I want is for them to get up in the middle of the night to reset it.

[Huge]

At least it never has in this house.