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Alecto SA-102 - Mini smoke detector with 5 year battery, 2 pack, white

Alecto SA300 DUO - Design smoke detector with 10 year battery - 2 pack - White

Alecto SCA-10 2X - Smoke and Carbon Monoxide Alarm Set of 2

Alecto SMARTSMOKE11 2 - WiFi Smart Smoke Detector - 2 Pack - White