pir

  1. R

    Is it enough to prove safe isolation on a circuit which is controlled by a PIR on a seperate circuit ?

    Hi Guys currently doing my apprenticeship and looking for some external advice regarding safe isolation. Situation is a circuit supplying some external street bollard lights and 1 or 2 street lamps. This circuit is fed via a single phase MCB then through a contactor all located in the db. The...
  2. P

    How to wire two PIR motion sensors together to activate only on double trigger ?

    Dear All, I have a very old Scantronic alarm system that unlike modern systems does not detect resistance values (no resistors in PIRs or in zones) but activates when the Normally Closed contacts become open. The PIRs are wired with 4 core +ve -ve NC and Com Is it possible to wire two PIRs...
  3. E

    UK PIR sensors in a shower room

    Can a PIR sensor be fitted on the wall of a shower room
  4. stepheng74

    Pir light circuit on 24/7

    I have just turned up at my parent house and they've tried to replace the old pir sensor but now the floodlight is on 24/7. I've no multimeter and no idea which is switchedlive. can I just take out one of the live feeds and put it in Lout, and if it's still on 24/7 try the other live instead...
  5. S

    How can I wire 3 lights to 2 PIR sensors

    Hello, Disclaimer: Not a qualified electrician but just doing some DIY as a hobby, I've wired up my own Fused Spur before so I know the basics. I want to be able to wire up 3 20W Lights up to 2 PIR sensors on opposite sides of a fence. These must terminate to a standard UK plug socket due to...
  6. J

    Looking for Spectra Wirefree Lighting PIR and controller

    Hoping someone can help please. Back in the day, this unit was available all over the place: - https://www.tlc-direct.co.uk/Products/VEL420NB.html Very handy for areas when getting cable put in was a git. Does anyone know of a suitable alternative please? The PIRS are IP65, and only need a...
  7. timhoward

    Testing large amount of PIR controlled lighting

    I just wondered if anyone had any tips for testing an irritating design. It's a large self-storage facility, several RCBO protected lighting circuits serving two floors, no light switches anywhere, just PIRs on radial circuits controlling about 4 lights each and there's about 30 such setups...
  8. H

    Bizarre problem with PIR floodlight: how to diagnose

    I have a baffling problem with a newly-installed PIR floodlight and I'd like advice from the forum as to whether it's defective (and should be replaced) or if I've done something wrong. Background My new house (2008) had six old-school halogen PIR-operated floodlights all round; only one of...
  9. J

    Can I use multiple GU10 led lamps with their own PIR sensors in one room?

    Can I use multiple GU10 led lamps with their own PIR sensors in the same room? I have a row of existing lamps 600mm apart in a straight line & I would like to leave them turned on but only come on when someone is there. Here is a link to the type I am considering if it is possible. -...
  10. F

    Triac dimmer after PIR sensor

    Hi there, I am looking at specifying a Triac dimmer switch after a PIR and manual override to control several lights, i dont see an issue why this shouldnt work as the Triac dimmer is after the PIR. Has anyone done something like this before and had issues? I know its a bit unconventional but...
  11. A

    Outside Light with built in PIR

    Hi, Heavy industrial spark here, never do house bashing hence the question. I currently have a light switch at the front door not doing anything at the moment. I wish to take a cable, a 2 core and earth from it to an outside built in PIR activation light then daisy chain the wiring to another...
  12. A

    Linking PIR security lights or buying something smarter?

    Hi. I'm an I.T.. engineer with some outdated electrical experience. I qualified C&G 2330 17th edition about 15 years ago, but my only experience since then has been fairly basic stuff maintaining my own properties etc. I've just had a couple of LED security lights fail (Again) so I'm going...
  13. U

    Swapping switched outside light for PIR type

    Hi there, I have an outside light that is turned on with a switch from inside and would like to change it to a PIR version incorporating an option for the light to be on with the switch i.e. override the PIR or just use the PIR sensor. What will the switch do by default if i connect a light...
  14. S

    Pir orientation help

    I am mounting a PIR to junction box.Will it work ok in this orientation with adjustment buttons on bottom?Does it need rotated 180 degrees so buttons are on top?
  15. I

    PIR security light works in reverse

    I've just changed the bulb in an outdoor PIR security floodlight (to LED). But the light stays on by default, and turns off when I go outside. I don't think there is a control to "reverse" its mode of operation.
  16. Electrical2go

    Guide to Microwave vs PIR Sensors

    Sensors are all around us, from the automatic doors we walk through to the motion detectors that turn on our outdoor lights. But how do these sensors work, and what are the different types? In this guide, we will look at two popular types of sensors: passive infrared (PIR) sensors and microwave...
  17. D

    Wireless external PIR

    Hi All, I have a situation where I need to switch driveway lights using wireless sensors, entrance and house end. Is there such a product? Thanks for any recommendations
  18. G

    fitting a PIR sensor (4 wires)

    I recently purchased a LAP PIR sensor https://www.screwfix.com/p/lap-indoor-outdoor-white-pir-standalone-sensor-360-/9695v I presently have 4 wires where the old pull cord was (picture attached). Could someone please explain where the neutral wires are? The wiring is about 30 years old.
  19. B

    Retractive Switch and PIR issue.

    I've a light fitting that's controlled from a Whitecroft absence detector PIR and a wall switch. The way it works, is the Retractive wall switch with turn on the light by activating the PIR but then only turn off by the PIR’s duration or 10 minutes without absence. I’ve had to replace the PIR...
  20. S

    Strange things happen with two PIRs in parallel

    I needed to illuminate our dark side walk at the house. I have used two PIRs wired in parallel which switch four LED lights. The idea is no matter which side of the walk you start at, you'll always set one PIR off and have light. This works, but randomly the MCB of the circuit triggers. I...

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