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Internal PIR for lighting

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  • 30-10-2020 3:54pm
    #1
    Doop
    Registered Users Posts: 1,466 ✭✭✭


    Hi - looking for a bit of advice on internal PIR detectors.

    Currently have a utility room that leads to a bathroom I wanted a pir in the utility and another in the bathroom to automatically turn on the lights.
    Only problem is the bathroom would definitely need an override switch as someone in the bath doesn't want to be waving their arms about every 3 mins!

    My electrician wasn't too sure on if and how this was possible (he also thinks im mad looking for these! but thats a different story).

    In theroy I would like the existing light switch to function as an over ride and when turned to 'off' the pir takes over.

    The blow spec mentions 'Manual over ride with automatic reset after 8 hours' Is this what im looking for?
    Or can anyone recommend a spec that would achieve the above?

    https://www.eurosales.ie/products/id-23823.html?name=pir&type=simple&page=5

    Appreciate any info!


Comments

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    #2
    JimToken
    Closed Accounts Posts: 225 ✭✭JimToken


    I would just use key switches and pirs in the walkways etc

    I would skip the bathroom for the reason you mentioned, not sure does condensation affect their operation too.


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    #3
    JimToken
    Closed Accounts Posts: 225 ✭✭JimToken


    What I did in my own place was added battery pirs for bathrooms

    They do for short toilet use


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    #4
    alan4cult
    Registered Users Posts: 1,583 ✭✭✭alan4cult


    Do you need the bathroom light to turn off when you turn off the switch? If not you can just put a switch in parallel to the PIR and it will stay on.
    If you want the switch in full control you can get what you have there or use a contactor.


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    #5
    JimToken
    Closed Accounts Posts: 225 ✭✭JimToken


    alan4cult wrote: »
    Do you need the bathroom light to turn off when you turn off the switch? If not you can just put a switch in parallel to the PIR and it will stay on.
    If you want the switch in full control you can get what you have there or use a contactor.

    I guess the problem would be that they wouldn't bother changing from auto

    Then you have the hazard of the light going off

    Could be wrong ,maybe there's a solution


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    #6
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,536 Mod ✭✭✭✭2011


    I have a PIR in my main bathroom and en suite. Works very well.
    I went for the Philips Hue one, no restrictions on where it can be mounted.
    Simple quick install.


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    #7
    alan4cult
    Registered Users Posts: 1,583 ✭✭✭alan4cult


    JimToken wrote: »
    I guess the problem would be that they wouldn't bother changing from auto

    Then you have the hazard of the light going off

    Could be wrong ,maybe there's a solution
    There is no auto, the light is either always on or PIR controlled.


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    #8
    antoinolachtnai
    Registered Users Posts: 9,774 ✭✭✭antoinolachtnai


    alan4cult wrote: »
    There is no auto, the light is either always on or PIR controlled.

    If you wanted you could wire a timer switch in parallel with the PIR. Once you press it light stays on for 60 minutes (or whatever).


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    #9
    JimToken
    Closed Accounts Posts: 225 ✭✭JimToken


    alan4cult wrote: »
    There is no auto, the light is either always on or PIR controlled.

    I call the pir-auto and the lightswitch- manual there


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    #10
    JimToken
    Closed Accounts Posts: 225 ✭✭JimToken


    A bathroom is a hazardous location, all it takes is 1 unexpected outage and an accident

    If you have a manual override of the pir what's gonna happen, the householders will ignore it a lot of the time


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    #11
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,536 Mod ✭✭✭✭2011


    JimToken wrote: »
    A bathroom PIR might be alright but it's going to be staying on a lot longer than you need for toilet use for a start

    If you have under 5 watts if lighting that automatically switches off does it really matter?
    A bathroom is a hazardous location, all it takes is 1 unexpected outage and an accident

    Outages are few and far between but in my case what done actually makes it safer. The reason is that following an outage all lights come on by default.


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    #12
    JimToken
    Closed Accounts Posts: 225 ✭✭JimToken


    2011 wrote: »
    If you have under 5 watts if lighting that automatically switches off does it really matter?



    Outages are few and far between but in my case what done actually makes it safer. The reason is that following an outage all lights come on by default.

    Pirs are safer , I have them all over my place except bathrooms


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    #13
    JimToken
    Closed Accounts Posts: 225 ✭✭JimToken


    JimToken wrote: »
    Pirs are safer , I have them all over my place except bathrooms

    They are OK if you can be guaranteed they won't go off while you're in the bathroom


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    #14
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,536 Mod ✭✭✭✭2011


    JimToken wrote: »
    They are OK if you can be guaranteed they won't go off while you're in the bathroom

    Nothing worse than falling asleep on the pot and waking in darkness.........


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