Results 1 to 7 of 7

Thread: Multiple motion sensors

  1. #1
    New Member
    Join Date
    Nov 2014
    Location
    Kloof
    Posts
    6
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Multiple motion sensors

    Hello guys would someone kindly assist where possible. So I have this project where I need to install perimeter lights with a motion sensor for each. In addition to this a 240v siren is required. My question is how can I achieve triggering the siren regardless of which direction the motion is detected on these perimeter lights?

    3poles each having led light and a motion sensor. Siren is on 1 pole but must be activated by any of the 3 sensors on the 3 poles. Please help and thank you in advance.

  2. #2
    Platinum Member
    Join Date
    Jun 2017
    Location
    Port Elizabeth
    Posts
    1,236
    Thanks
    34
    Thanked 304 Times in 258 Posts
    Hi

    I would put a relay on the load side of each motion sensor - From the relay i would connect to the siren - That way you would not switch on the other lights .

  3. #3
    Diamond Member
    Join Date
    Apr 2010
    Location
    planet earth
    Posts
    3,943
    Thanks
    153
    Thanked 317 Times in 287 Posts
    Quote Originally Posted by mig View Post
    Hello guys would someone kindly assist where possible. So I have this project where I need to install perimeter lights with a motion sensor for each. In addition to this a 240v siren is required. My question is how can I achieve triggering the siren regardless of which direction the motion is detected on these perimeter lights?

    3poles each having led light and a motion sensor. Siren is on 1 pole but must be activated by any of the 3 sensors on the 3 poles. Please help and thank you in advance.

    I am using my alarm system...with the option to trigger a buzzer (while at home) or the alarm if activated... after dark the lights allocated to a specific PIR's will switch on... everything is 12VDC except the lights which work via a relay 230 VAC

    The light can be switched on via my alarm app... they can be switch on via a wall switch ... activated if the sensor is triggered... and via 4 button remote which by pressing a combination of buttons of the remote are capably of 16 triggers... the red button over rides everything and switch all the exterior security lights on.
    Comments are based on opinion...not always facts....that's why people use an alias.

  4. #4
    New Member
    Join Date
    Nov 2014
    Location
    Kloof
    Posts
    6
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Thanks profusely guys. Is there no other way of doing it without the use/installation of a relay?

  5. #5
    Diamond Member
    Join Date
    Apr 2010
    Location
    planet earth
    Posts
    3,943
    Thanks
    153
    Thanked 317 Times in 287 Posts
    Quote Originally Posted by mig View Post
    Thanks profusely guys. Is there no other way of doing it without the use/installation of a relay?
    How are you going to reset the siren once it is triggered?

    You could trigger the siren directly from the light ...as the light fitting is switched on ...the siren sounds at the same time. ..but it will stay on until the light switches off.
    Comments are based on opinion...not always facts....that's why people use an alias.

  6. #6
    Diamond Member Justloadit's Avatar
    Join Date
    Nov 2010
    Location
    Johannesburg
    Posts
    3,480
    Thanks
    134
    Thanked 695 Times in 593 Posts
    Blog Entries
    1
    Quote Originally Posted by ians View Post
    How are you going to reset the siren once it is triggered?

    You could trigger the siren directly from the light ...as the light fitting is switched on ...the siren sounds at the same time. ..but it will stay on until the light switches off.
    What about if an animal triggers the light & Siren? you also get a skrik.

    One way but now starts getting a bit complex, is to have a "On Delay" timer on the light, in which the timer can be set to a few seconds.
    The contacts of the timer could be connected to a wireless code hopping remote. The reason for a code hopping remote is that the normal switch settable code may interfere or be interfered by a neighbors one.
    The receiver then could have your siren on it, and a timer to drive the siren for a while before switching off.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar pumping, Solar Geyser & Solar Security lighting solutions - www.microsolve.co.za

  7. #7
    Silver Member PlatinumWealth.co.za's Avatar
    Join Date
    Sep 2016
    Location
    Cape Town
    Posts
    289
    Thanks
    6
    Thanked 19 Times in 18 Posts
    It's either a relay or you can get smart sensors (but you'll need connectivity which is probably out of the question.)

    Sent from my SM-N970F using Tapatalk
    The JSE Investment and Finance Forum - PlatinumWealth.co.za
    JSE Investing Chat Group
    Unlock US Netflix

Similar Threads

  1. Multiple supplies in one building
    By ians in forum Electrical Contracting Industry Forum
    Replies: 3
    Last Post: 24-Jul-19, 11:50 AM
  2. occupancy sensors
    By bergie in forum Electrical Contracting Industry Forum
    Replies: 3
    Last Post: 05-Oct-11, 10:08 AM
  3. pty\cc and multiple businesses
    By AmithS in forum General Business Forum
    Replies: 8
    Last Post: 13-Feb-09, 10:00 PM

Did you like this article? Share it with your favourite social network.

Did you like this article? Share it with your favourite social network.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •