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Jemay Wi-Fi Smoke Alarm Receive Alerts with App,Wireless Smart Smoke Detector with Auto Self-Check Function,Fire Alarm with Photoelectric Sensor,Replaceable Battery, 2.4G hz WiFi, not 5G, 4 Packs : Amazon.sg: DIY & Tools
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Smart WiFi Smoke & Carbon Monoxide Detector, Battery Backup, App Notification, Wireless Interconnect - TREATLIFE | TREATLIFE
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