Security Lights

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  • barry wilkins
    Senior Member
    • Aug 2009
    • 172

    #1

    Security Lights

    I have just been looking at a PIR security light ,usually these have two sensors
    Cds cell.
    Pyrolytic detector.
    The one I have looked at only has one IR detector.
    Does this carry out both functions of sensing the visible light, and the infra red radiation ?

    Barry Wilkins
  • stj
    Great Sage 齊天大聖
    • Dec 2009
    • 30901
    • Albion

    #2
    Re: Security Lights

    cheap ones just switch when they detect a person,
    better ones only work when it's dark to save power.

    Comment

    • Poor Flick
      Of sound mind
      • Jun 2014
      • 3167
      • U.S.S.A. The flophouse of the world.

      #3
      Re: Security Lights

      If you like the manual on option make sure it's listed on the box. I thought I got a good deal on some motion detect lights, they didn't have that feature, I need to take them back.
      From my favoritest movie ever!:
      Cledus Snow: Can I ask you a question?
      Bo Darville: Sure, ask me what?
      Cleedus: What the Hell do we want to go to Texas for and haul beer back here? What is that?
      Bo: For the good old American life. For the money, the glory, and the fun. Mostly for the money.

      Comment

      • stj
        Great Sage 齊天大聖
        • Dec 2009
        • 30901
        • Albion

        #4
        Re: Security Lights

        i used to just rewire them for a 3way switch - on-off-auto
        it will trash the warranty messing with the internal wirring usually though.

        Comment

        • barry wilkins
          Senior Member
          • Aug 2009
          • 172

          #5
          Re: Security Lights

          After I posted this I realised that dusk function operated when the output of the PV cell dropped because of the darkness .The IR detetctor just operated by body heat.

          Barry

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