SEBSON 10 Year Mini Smoke Detector, DIN EN 14604, VDs 3131, Photoelectric Smoke Detector, Lithium Battery, Mute, Diameter 69 x 46 mm, Pack of 4 : Amazon.de: DIY & Tools
Kidde 10-Year Worry Free Smoke & Carbon Monoxide Detector, Lithium Battery Powered with Photoelectric Sensor 21029899 - The Home Depot
6 Pack of Kidde i9010 10-Year Sealed Lithium Battery-Operated Smoke Alarm with Memory and Smart Hush - Amazon.com