• 2 Posts
  • 8 Comments
Joined 1 year ago
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Cake day: July 18th, 2023

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  • OP here, I ended up buying one USI MI106S, which advertises the following:

    • Combines the benefits of both Photoelectric & Ionization technology in one alarm
    • Smart Alarm Technology virtually eliminates nuisance alarms
    • Automatic temperature and humidity compensation continuously adjusts to variations in environmental conditions, reducing nuisance alarms

    Which sounds like what I’m looking for. I’ll try some informal tests on it before I buy more.



  • Full-on alarms, not the low-battery chirps. I think the first incident after I replaced the old detectors happened in less than a month. They’re the 10-year sealed style, anyway.

    Did you replace them with alkaline or lithium 9V batteries? In my limited experience the alkaline batteries last less than a year before the low battery chirps start again. If your house is significantly cooler at night, battery voltage might drop enough to start the chirps, also.