【Protect Your Family with Enhanced Photoelectric Smoke Detector】Photoelectric smoke alarm adopts advanced photoelectric sensor, that detects smoldering fires more quickly and accurately, ensuring no delay in alerting you to danger. Hightly sensitive real-time detection,secure your home with Jemay..【Install in Only Minutes】 Battery-operated smoke detector can be mounted quickly and cleanly with this magnetic assembly system. Smoke detector requires no rewiring. Easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs..【Self-check and Silence Functions Smoke Alarm】Equipped with a low-battery warning, so you know when it's time to replace the unit for safety. If non-emergency smoke causes nuisance alerts, you can easily silence them by pressing the test and silence button..【Large Coverage】Smart fire alarm is small size, but incredible performane, 215-430ft²(20-40m²) coverage of detection, over 85dB alarm sound within 10ff..【Guaranteed Quality】Jemay smoke alarm is upgraded premium ABS material, temperature resistant up to 212℉,ensuring excellent heat resistance and high durability. We provide a 60-day money-back guarantee and a 10-year product warranty (1-year battery).