Where is the application for 10 year sealed battery in fire safety ？

At first, what is a 10 year sealed battery?
10 year sealed battery offer a variety of benefits to the most people who rely on continuous battery-powered smoke and fire detection in their homes. The alarms are powered by sealed, long-life lithium batteries for 10 years, meaning they are always on.

speaking of 10 year sealed battery, I naturally think of 10 years of smoke detectors in our fire protection industry. 10 year sealed battery smoke alarms. A new technology helps to reduce fire injuries and deaths ！

Then what is a 10 year sealed battery smoke alarm? 
10 year sealed battery smoke alarms are powered by sealed lithium batteries that have a life span of ten years. These alarms provide 10 years of continuous protection with no need to replace the battery for the life of the alarm.

Are 10 year sealed battery smoke alarms good?
10 year sealed battery smoke alarms have many benefits and are a good choice due to the fact that you never have to change the battery. 
Like sumring SR-851 is a 10-year, sealed battery, photoelectric, smoke alarm with anti-dismantle function and with big hush/test button and with fireproof ABS material. more details，please click“10 year sealed battery smoke alarm”