With the Elro FS8010 you are well protected against dangers such as smoke and fire. The built-in lithium battery has a lifespan of 10 years. So you do not have to worry about that for the time being. The format is also an advantage with this smoke detector. With a diameter of 7.2 cm and a height of 3.4 cm this detector is not very noticeable. At the moment that the optical sensor detects smoke or fire, an audible signal sounds 85 dB. Loud enough not to miss this one.
Test the smoke alarm regularly to make sure it is working properly.