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  1. B

    Yale Siren fault

    Siren sounding, with no activation from the control panel - I've found can be caused by the tamper micro switch within the Siren, going OC intermittently - Easily replaced by a standard micro switch from Ebay.
  2. B

    Yale additional siren (HSA6400 + HSA3050)

    Can a HSA3050 siren, be an additional siren to a HSA6400 system? If so, how is it programmed in. Thanks.
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