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Indoof PIR Light for hallways

  • 07-11-2008 6:02pm
    #1
    odonoso
    Closed Accounts Posts: 39 ✭


    Hi All

    I have read a few place not to install indoor PIR on two way switching circuit, Is it ok to install these device in parrell with the two way switch circuit

    Diagram attach


Comments

  • #2
    Steve
    Registered Users, Registered Users 2 Posts: 22,584 ✭✭✭✭Steve


    pir's can't work with two switches - it would need to be a crossover.

    If you put the PIR in series after the two way circuit then it might work - it would be better to remove one switch and let the PIR control the light while leaving the switch 'on' all the time.


  • #3
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    What way do you want it to work exactly??
    -> normal 2 way switching for turning the light on
    -> 2 way switch is not able to turn the light off, if PIR wants it on
    -> if the light is not on & PIR motion is detected turn it on

    I'm sure if you got a high end PIR sensor, with dry 220V AC contacts it would be able to do this....


    You could also look up the new lighting control protocol called DALI. Its a bus system for lighting which is being developed.... It would allow a PIR and as many light switches as you want, but they would all have to be DALI compatible, which is over-kill for this application...


  • #4
    Stoner
    Registered Users, Registered Users 2 Posts: 10,952 ✭✭✭✭Stoner


    DublinDilbert wrote: »
    protocol called DALI. Its a bus system for lighting which is being developed.... It would allow a PIR and as many light switches as you want, but they would all have to be DALI compatible, which is over-kill for this application...

    Big time !!! that DALI stuff is expensive

    I guess it comes down to would a PIR not just replace the two way swiches.

    You could consider replacing each swtch with a pir switch (two PIRs) if their positions worked out for you and you could have each one as a one gang


  • #5
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    Stoner wrote: »
    Big time !!! that DALI stuff is expensive

    You can only get it in a handful of places also too.... usually needs to be ordered in....


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