darbeylad88 Posted December 6, 2006 Posted December 6, 2006 hi, i've ran many cables near mains (240V) and it has never caused a problem. to be honest unless you run it with 415 volts for a long way it wont cause you a problem. espescally with a zone cable!!
arfur mo Posted December 7, 2006 Posted December 7, 2006 hi all, regards of detectors facing windows as James says less likely today to be a problem, and personmally i never had an issue with detectors facing windows (i'll bet that will get a few upset on here ). i prefer to have the pir above a door, that way it don't get covered by a curtain, bookcase with a hat box on top etc. and they dont put shelves or speakers in front of it either usually, which is a much higher incident than any f/a's caused by a pir looking at the glass. but one thing that still can cause trouble (and often overlooked), sunlight reflected (bounced) of a glass or shinny table directly onto the pir mainly late summer and during by high sun spot activety. a dual-tec will reduce this, but as microwaves penatrate the building fabric it can also on occasion trigger if external movement is detected at the same time. has been the reason of client's saying 'the alarm never has a problem normally, but it always waits to go wrong while i am on holiday' giving you a real big clue that sun spot activity is the cause regs alan If you think education is difficult, try being stupid!!!!
arfur mo Posted December 7, 2006 Posted December 7, 2006 Not if you adjust it correctly... Hi Alarm Guard so please tell me how in a 'L' shaped lounge or dinning room, or in a long narrow room (this should get interesting) regs alan If you think education is difficult, try being stupid!!!!
Guest rjbsec Posted December 7, 2006 Posted December 7, 2006 why not alarm guard Think of the shape of the "L" and think of the shape of the microwave coverage and you should be able to answer your question.
arfur mo Posted December 8, 2006 Posted December 8, 2006 Use 2 sensors and adjust correctly..... Check mate I believe good sir... so you would 'face' two mwd devices towards each other would you? when doing so is like pressing two baloons together, you get a spill over of detection into the vacant area adjacent the 'L', so not checkmate more like 'check it mate' B) i started to think of Jordon then and i've completely lost the thread now regs alan If you think education is difficult, try being stupid!!!!
mjw Posted December 8, 2006 Posted December 8, 2006 Use 2 sensors and adjust correctly..... Check mate I believe good sir... I agree,but you should never have a dualtec with a microwave set so high it can penetrate the building fabric.........false alarm rate riseing me thinks????? so you would 'face' two mwd devices towards each other would you? when doing so is like pressing two baloons together, you get a spill over of detection into the vacant area adjacent the 'L', so not checkmate more like 'check it mate' B) i started to think of Jordon then and i've completely lost the thread now regs alan also dual tec should no longer cross talk
arfur mo Posted December 8, 2006 Posted December 8, 2006 I agree,but you should never have a dualtec with a microwave set so high it can penetrate the building fabric.........false alarm rate riseing me thinks?????also dual tec should no longer cross talk hi mjw, seems a few are msiing the point me and alarm guard are bantering about. the patern or 'baloon' of a mwd side of the detector will spill through the walls in a narrow room, this is because you need to cover upto the far boundary, so if you have an 'L' shape room to get to the far boundary on each side of the 'L' means the spill over would be into the outside 'inner' of the 'L' which could be a court yard, this may contain a down pipe, so if raining could put the mwd into alarm, then if the pir is tripped say because a fan heater you get an 'unexsplained' false alarm. now can oi get back to my imagination of Jordans boobs? as they have some reference point, ie an artifical scenario blown out of all preportions regs alan If you think education is difficult, try being stupid!!!!
james.wilson Posted December 8, 2006 Posted December 8, 2006 what about k band then securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
Guest rjbsec Posted December 8, 2006 Posted December 8, 2006 also dual tec should no longer cross talk Noticed that the "new" Pyronix d/t's are sticker colour-coded to avoid positioning similar ones opposite one another, thereby causing cross-talk.
arfur mo Posted December 8, 2006 Posted December 8, 2006 what about k band then i was in the 'G' stringe region, not thinking about bands at all regs alan If you think education is difficult, try being stupid!!!!
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