XUK Smoke Alarms for Home 4 Pack, Battery-Powered Photoelectric Fire Alarm with Replaceable 9V Battery, Test & Silence Button, Detector LED Indicator (4 Pack)

【Advanced Photoelectric Sensor Technology】This smoke alarm uses an advanced photoelectric sensor to detect early-stage fires and slow-burning smoldering flames. Even without visible fire, this fire detector smoke detector quickly triggers an alarm, giving you time to respond and protect your family and home. 【Accurate Detection, Fewer False Alarms】Equipped with a high-sensitivity error-correction chip (0.1 bar sensitivity, 0.08-second response speed), this smoke detector for home ensures precise detection and minimizes false alarms. Its low power consumption extends lifespan beyond 10 years, providing reliable, long-term protection. 【Battery Included & Low Battery Warning】Each battery smoke alarm comes with a replaceable 9V battery and a built-in low-battery warning function. With energy-efficient standby mode, these battery smoke alarms for home provide constant monitoring and peace of mind for years to come. 【85dB Loud Alarm & Flashing LED Indicator】When smoke is detected, the red LED light flashes rapidly, and the smoke alarm emits a loud 85dB sound to alert you instantly. The strong sound easily penetrates walls and ensures that everyone in your home is warned, even from another room. 【Certified Safety & Reliable Quality】Made of flame-retardant ABS material and tested under EN14604 and UL 217 standards, these fire alarms for home guarantee long-lasting safety. The test button allows you to check the device anytime. Our dedicated support team is available within 24 hours to ensure a secure, worry-free experience.