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Yes after 42 years [ a life sentence for murder is less ] and I do not know how many installs or sales I forget all the companies I worked for I am supposed to be semi retired but we moved house and I just had to rip the Risco wireless c--p out I have found a proper use for the panel use it to hold shed door open it even cannot do that reliably

Fitted these back before the days of map6 late 70s before the days of plastic cases, used to be wired first to alarm latch ,had to fit up to ten on a single zone panel at first now wired eol nice to see an attempt to make it grade 2 Remember the case shape has it got Elkron [Italian]or Peake [uk rip off] on the label it is first detector I saw that had an led not a bulb They put an old gunn diode micro- wave in that case, and ultrasonics with ceramic coils and later even a single element pir he relay clicked so loud people complained most failed and replaced with Aritech Du series or later Racal 771 single element pir