eufy Smoke Detector E10, Precise Fire Alarms, Ultra Compact 70 mm Design, Extended 5 Year Battery, Large Wireless Range, Requires EU Version of HomeBase 2, 3, Mini or Pro\n\nAbout this item\n--Accurate Fire Alerts:Complies with UL 217 10th edition standards, ensuring precise detection of various smoke types without triggering false alarms.\n--Ultra-Compact Modern Design:With a diameter of just 70 mm (2.75 in), this smoke detector is one-third the size of traditional models, blending seamlessly into any home environment.\n--Long-Lasting 5-Year Battery Life:A high-quality CR123A battery and low-power technology ensure long-lasting performance with minimal maintenance and fewer battery replacements.\n--Expansive Wireless Range with HomeBase:Provides a stable connection with HomeBase at open-air distances of up to 656 ft (200 m).\n--Requires HomeBase to Operate:Compatible with HomeBase Mini (v4.0.5.2 or above), HomeBase 2 (v3.4.1.2 or above, released after 2021), HomeBase 3 (v3.7.2.6 or .