Key features

• •Test Button & Low Battery Signal: The smoke alarm is easily to test by pressing the button more than 5 seconds. If low battery there will be a signal alarm,which will recall you to change a new battery,then the smoke detectors will work as usual.
• •Safety Clip Feature: The photoelectric smoke detectors are not allowed mounting without battery install,so don't worry about the fire risk if you forget the battery.
• •Easy Install & Replacement Battery: The smoke detector is 9V battery operated,which can be quickly replaced.There 2 expansion screws in the box to help you install the alarm.
• •10 Years Life Time: The smoke alarm have 10-year long life(Not the battery life time) with loudly alarm(Loud>85dB) alarm signal at 3 meters,to make the room person can hear the alarm clearly when the smoke alarm is chirping,There will be enough time to leave from the dangerous.
• •Home Protection: Working smoke detector cut the risk of dying in a home fire by 50%, and that's important because a home fire starts every 83 seconds! The faster you realize a fire warning,the more time you can escape from the fire.