[OT] Where in UK get "beep once bell" plus PIR unit

Discussion in 'DIY Computers' started by Meg A Hurtz, Jul 20, 2004.

  1. Meg A Hurtz

    Meg A Hurtz Guest

    I want to know when someone is approaching my front door.

    I want a sort of doorbell system which is triggered by a PIR rather
    than by a user pressing on push-switch.

    Of course I don't want the bell/buzzer to sound for minutes each
    time but just for a few seconds.

    Can I buy such a setup ("beep once bell" plus PIR) as a single

    Or do I have to build it myself - if so, then where can I get the
    beep-once alarm?
    Meg A Hurtz, Jul 20, 2004
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  2. Meg A Hurtz

    Ian Stirling Guest

    Practically any PIR intended for use with a lamp can be turned down
    to 5-10 seconds.
    Simply use one of these, with the relay output connected to the doorbell,
    possibly with a button in parallel in case the PIR fails.

    Ensure that the relay output is fully isolated, and not connected to live
    or neutral.
    Ian Stirling, Jul 20, 2004
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  3. Meg A Hurtz

    logized Guest

    Various places sell them -

    logized, Jul 20, 2004
  4. Meg A Hurtz

    Ed Sirett Guest

    Typical intruder alarms panels come with a 'chime' facility which
    causes the panel to beep when a zone is activated. This can be set
    on a per zone basis, so if you already have an alarm or are thinking of
    adding one then you would simply mount a standard PIR over the front door in
    a weather proof location.

    A standalone mains powered PIR detector will have contacts that are
    distinct from its power supply (cf the innards of a cheap PIR floodlight).
    these contacts can be used to do the buisness on a bog standard door bell.
    Also these units will be reasonably weatherproof (say IPX4 or better).

    Ed Sirett, Jul 20, 2004
  5. Meg A Hurtz

    Paul C Guest

    You can get an external PIR from a good DIY store that has a receiver that
    you plug into an ordinary electric socket. When the PIR detects movement the
    unit will beep. The good thing about it is you can fit it to any plug socket
    in any room.

    Paul C, Jul 21, 2004
  6. Meg A Hurtz

    Svend Cr Guest

    I probably didn't make it clear but 5 to 10 seconds is a bit too
    long for me.

    I want a single "bzzzzzzz!" lasting just a second or so.
    Svend Cr, Jul 21, 2004
  7. Easy enough to make - even by keeping it down to ready made units. Maplin
    do a couple of timers with relay outputs - VF08 looks like it might be
    Dave Plowman (News), Jul 21, 2004
  8. Meg A Hurtz

    Lem Guest

    Maplins website says VF08 is discontinued.
    Lem, Jul 21, 2004
  9. They keep doing that. Perhaps VF06, then?
    Dave Plowman (News), Jul 21, 2004
  10. Mosquitos go nnneeeep not bzzzzz, try a Blue bottle or Bumble Bee.
    Dave Liquorice, Jul 22, 2004
  11. Meg A Hurtz

    Jeff Gaines Guest

    But you'd have to guarantee to swat it after a 'second or so'!
    Jeff Gaines, Jul 22, 2004
  12. Meg A Hurtz

    Svend Cr Guest

    Are there any models where the chime can be remote from the PIR
    light itself?

    If so where can I get one from?
    Svend Cr, Jul 22, 2004
  13. I'd have thought they all would, not much point in the exterior light
    going "boing" is there?
    Dave Liquorice, Jul 22, 2004
  14. Meg A Hurtz

    Ed Sirett Guest

    But it is what the OP says he wants, isn't it.
    Ed Sirett, Jul 23, 2004
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