SITERLINK Mini Smoke Detector Fire Alarm, Small 10 Year Battery Photoelectric Smoke Alarm, Fire Detector with Test & Silence Button for Home, UL Listed, GS521C-A, 4 Pack

Features

• Test &Silence Button▶ The smoke alarm has the "TEST/SILENCE" button, you can test the alarm every week to ensure the good working state of the alarm. When the detector sounds, you can press the silence button to stop it from sounding. And 10 Hours non-disturb mode under low battery status avoiding undesired noise.
• Unique Design▶ The smoke detector 10 year battery is smaller than other detectors. Although it is a small size, it does not have fewer functions than the large size. Mini size is more convenient to use. Smoke alarm use the automatic compensation design with stable performace,suitable for long life operation,lower false alarm rate.
• 10 Year Lifetime▶ The smoke alarm has 10 years 3V lithium battery which you don't need to replace battery to save your time. It can save energy and protect environment.
• Advanced Technology▶ The smoke alarm is more sensitive in detecting slow smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames.
• UL Certification▶ The smoke alarm has passed UL certification, its quality is guaranteed. The smoke alarm don't contain any radioactive material and won't cause harm to human's body.