Not sleeping with one's iPhone is far more common, despite the belovedness of Apple products.
In design terms an alarm strobe has removed everything unnecessary for its purpose and its sole purpose is to save your life on the rare occurrence of fire. It won't be on a charger or in your pants or sitting on the table by the TV or off with your spouse on a business trip.
It will be hanging on the wall, with power or backup power, hardwired to the alarm panel because that's what field experience has shown works.
Don't get me wrong, the sentiment behind the product is admirable. But the alarm industry is already deadly serious and has robust proven solutions based not on theory but on close attention to the causes and consequences of actual fires.
yes the flash on and off, for fire alarm notification device, they are powered by a direct current circuit that also requires battery backup having a constant state light would put a larger load for no gain. Also it be more like emergency lighting not a notification appliance
