Ecoey Smoke Detector, Smoke Alarm with Advanced Photoelectric Technology, Fire Alarm Smoke Detector with Test Button and Low Battery Reminder, Fire Alarm Used in Bedroom, Home, FJ138, 1 Pack

【PHOTOELECTRIC ALARM】 This smoke alarm responds to hazardous smoke quickly with an over 80 dB loud alarm and a rapid flashing LED indicator, giving you extra time to control the fire or safely escape.
【EASY INSTALLATION】The smoke detector can easily install with magnet or mounting bracket. No hardwired anymore and you can install it wherever you want.
【LOW BATTERY REMINDER】 When the battery is low, the red LED flashes every 32 seconds with a sound to remind you to replace the battery in time.