a fire alarm apparatus according to one embodiment of the present invention a fire alarm apparatus 10 according to one embodiment of the present invention includes a smoke detector 26 receiving smoke 44 through apertures 56 of a package 16 for detecting smoke indicating fire a cellular telephony assembly 40 for initiating a call upon detecting the smoke and a battery 24 for powering smoke detector 26 and cellular telephony assembly 40 the smoke detector may apply optical detection by photoelectric effect by ionization or other physical effects a subscriber identity module sim is an integrated circuit that securely stores the international cellular subscriber identity cellular telephony assembly 40 includes a sim subscriber identity module card 22 thus having a certain address thus upon knowing that the call is received from a certain international cellular subscriber identity being unique the user knows exactly which fire alarm apparatus signals the alarm for example if a fire extinguishing service receives two calls from two separate fire alarm apparatuses 10 the service can distinguish between them and know the exact location of each alarm based on the international cellular subscriber identity according to another embodiment fire alarm apparatus 10 includes a locating component 28 such as a global positioning system gps component for informing the location of fire alarm apparatus 10 with the initiated call cellular telephony assembly 40 also includes a transmitter 32 for initiating calls according.