This is more than just a smoke detector, this device comes with a slot for SIM card and once installed it is able to alert up to four numbers of a problem, it is ideal for businesses and is easy to set up too!
These are the details for the brilliant Firetext Smoke Alarm
Battery powered SMS Smoke Alarm. Upon activation, the alarm generates a user-defined text message, which can be sent to a maximum of four mobile recipients. Photoelectric smoke detection, ideal for smouldering fires; Quad-band GSM; 2 year guarantee; Super-loud ,85db at 3m siren; All fixings supplied; Quick-fix mounting plate supplied for easy installation; Insect proof; Smoke detection complies with EN1406, AS3786 and UL217 standard; CE, BSI, SAI Global approved; Low battery warning (audio)
Priced at £89.99
Source [Oh Gizmo]