sensors | Page 4

sensors

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  1. L

    Lights staying on with sensors

    Went to look at some lights today as they were not working turns out all the problem was is bulbs swapped and away I go These lights are on pir sensors as it's a communal walkway to flats just got a phone call to say there on all the time Any ideas why Paul
  2. C

    What would you test after installing occupancy sensors?

    Just after some experienced views! I was at a job today where microwave occupancy sensors had been installed on tennis courts. I think they are basically glorifed P.I.R.'s. What certificate would you issue afterwards - minor works as it's just an addition? Would you test at the last light or...
  3. R

    Testing zs on multi way flex 7 box

    Someone told me on my 2391 that when testing a lcm that all lights that are plugged in are classed as portable equipment. Is that true and is it ok to take r1+r2 and zs at the lcm
  4. P

    Job Lot of 41 Gent Vigilon S-Quad Heat Sensors S4-711 O2H + beacons and a sounder

    I have for sale on Ebay 41x Gent Vigilon S-Quad S4-711 O2H Heat Sensors plus 5 beacons and a sounder: http://http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=150611586096&ssPageName=STRK:MESELX:IT I am open to offers and may be willing to split if required. Thanks Pat
  5. M

    pir sensors " help!! "

    any good pir sensors? I'm new to the site and new to tweeting, - is this tweeting? - I don't normally get time to use the computer, it has taken me about 10 mins to write this. Anyway, does anyone know of a good make of pir sensor that won't let me down. I'm getting fed up of going back to...
  6. M

    any good pir sensors?

    I'm new to the site and new to tweeting, - is this tweeting? - I don't normally get time to use the computer, it has taken me about 10 mins to write this. Anyway, does anyone know of a good make of pir sensor that won't let me down. I'm getting fed up of going back to jobs to "reset" the...
  7. S

    Posh outside light sensors...- (Half brightness when dark?)

    Hey guys, Iv been asked by my mate to fit some new outside lights at his place, not a problem at all, until he mentioned some kind of 'funky dooberrys' He said they come on at half brightness when it get dark enough, then comes on to full brightness when it senses the movment. To be fair...
  8. G

    Pir sensors for flood lights, parallel wiring 2 sensors to one load

    Hi all, Is it possible to wire two PIR sensors in parallel in order to give two beams of coverage with just one flood light as the load. Have you done it? I am concerned that if one sensor activates, 230v would get onto the output of the other without the other having been activated. I have...
  9. G

    Light/dark sensors?

    Hi, Just wondering if anyone can recommend a sensor that can distinguish between a bright surface and a darker surface? The bright surface is White as in White bread colour. The background is darker, it's brown in colour. The bread is flat so I can't just use a sensor that can detect a...
  10. A

    help required!wiring motion sensors in parallel to lighting circuit?

    I am trying to wire some motion sensors in parallel at each end of a corridor at work.There are 6 lights that are connected to this circuit via small plugs. I have got one sensor which work's by connecting it to feed at IN terminal and connecting OUT terminal to closest light. Doing this makes...
  11. K

    Gate sensors

    Hi Been to look at a job today,bit of a bodge by some builders who do electrical work too, seen it all before lads haven't we?! Anyway, I need to install the proximty sensors for some automatic gates, just the hydraulic mechanism type for the control box, and I forgot to look at the manual...
  12. J

    PIR Sensors

    Evening all. Thanks to Grifin for his earlier advice regarding my current Auto lighting project. My client is now adamant that all internal lightng within the Module is automatically controlled by PIR Sensors because the system "works so well in his new office". Maybe that has something to do...
  13. G

    Motion Sensors and remote controls

    Hi, i know this maybe an strange question, but i am creating an art project and i would like to know how i could wire up a remote control car to motion sensors? so instead of the handset controlling the car, motion sensors, triggered by someone walking past them, control and drive the car...
  14. J

    Bathroom Fans with humidity sensors

    Hi Guys, its been a while since Ive been on here but I was wondering if anyone has installed any bathroom fans with humidity sensors. Got to install one tomorrow and was wondering if they are wired any different from normal ones. Its a 4'' Manrose Fan by the way with a sensor build...
  15. S

    Semiconductor gas sensors

    Hi Chaps, This may be a long shot but can anyone advise (or even point in the right direction) on the science behind the operation of semiconductor gas sensors. Thanks Steve

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