sparky

any body got any advice on a alarm system that will allow me to put 5 wireless attack pendants on for school teachers

do opal do a pet tolerant pir or would i have to mask it

its one of them jobs im afraid there is no chance of getting a cable to the other side a pir system might work if i can find a sensor wich will not pick up a large dog or false alarm on badgers or foxes like in the past do you have any thing in mind

can any body advise i need a sensor to cover a gateway to either make or break a contact when somthing or some one breaks the beam the problem is its a 30m gap and i can only get a cable to one side so it has to be reflective or single beam i can get plenty that do 10 meters but cant find any the do 30meters and fed from one side only does any one have any idea makes model cheers nick