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, 2 Packs - Amazon.com
Putogesafe Wireless Smoke Detector Interconnected, Smoke Alarm with 10 Years Battery Life, Fire Alarm with Big Test/Silence Button, Up to 30 PCS Interconnected, Low Battery Warning, 4 Pack - Amazon.com