Why should I buy Z Wave smoke detectors?

I have been working on my home automation for a few years and originally started with z wave products, however I moved to sonoff zigbee and Wi-Fi as they where a fraction of the price and worked well with alexa. I do have a z wave smoke detector left from these days and I am trying to justify purchasing 2 more to cover my whole house, the price of these popp zwave detectors are huge, what are the benefits of these?

Submitted by rikochi1972

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