Cheapest Smart Smoke Detectors · 2026 Updated Aug 16, 2026
  1. Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO) $39
  2. X-Sense SC07-WX $44.99
  3. Kidde P4010ACSCO-WF $89.97
  4. Google Nest Protect (2nd Gen, Battery) $119
  5. Google Nest Protect (2nd Gen, Wired) $119
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