*  Unique cover Button Design, Easy to test regularly

*  Fast Response, Alarm immediately when detected smoke

*  High Audibility Level over 85dB/3m, enough to wake you up when the danger comes

*  Unique Dust-Proof Design,Prevent false alarm

*  Ultra thin, Exquisite and Modern Appearance

*  Battery type can be customized :Carbon zinc(1 year),alkaline(3 years), lithium(5 years and 10 years).

*  EN14604：2005 certified product standards