I am looking for a solution that would make the wired smoke detector in the apartment downstairs trigger an alarm. The purpose is to be alerted if there is smoke while the tenant is away/in the shower.
At the moment, the smoke detector downstairs is connected to another smoke detector in my own space. It works, but the detector downstairs also goes off if I burn toast, disturbing the tenant downstairs.
I am looking for a way to replace that wired detector in my place with a simple alarm, since it is it's actual purpose. A solution using a piezo is proposed in a comment here but there are no details on how to procede.
Another possibility would be to neuter the detector part in my unit and use it for its alarm only, but I don't know if that is doable.