Are you an old or a new VICTIM of wireless alarm systems wrong advertisements and sellers talk?
Wireless alarm systems fail during Radio Frequency Interferences (RFI) without warning to the owner and nothing can prevent RFI.
TEST YOURS if you have one...
:For all frequency types of wireless alarm systems:
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: You don't believe me? : Test it or ask so called professionals to explain you why : wireless alarm systems are reliable and how they avoid the : well known nuisances of RFI.