Don’t buy the CO/Smoke detector

@lance843​ 
I had a Simplisafe smoke detector malfunction while we were away and in a different time zone.

The cops & fire department woke up our neighbors at 2am to see if they had a key to the house (they did).  The authorities when into our house, and determined there was nothing going on.

@brycen​ As posted in the other thread you started on this:

@brycen I hope this doesn't bring me bad luck, but have six smoke, 3 CO and one combo smoke/CO sensor and no false alarms since 2018, except for our first and last after they were installed earlier in the year.  Luckily we were home and my wife insisted I read the owners manual, Now I faithfully clean all with a can of compressed air on a bimonthly basis.  As far as the FD, when I mistakenly thought I needed a permit, I was told by the FD that I could provide them a code for my smart lock and they would enter the premises, minus the axe, to inspect the premises.

The code is encrypted and only seen by dispatch when the call is sent out to send the FD on site. Your idea of secondary verification is a good topic to explore, but at this time don't know how it would be structured and operate, while keeping the house from burning to the ground.