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On average, 84% of children under 13 sleep through ‘standard’ smoke alarms

For a safe and happy home


(Bruck et al., 1999/2000/2011) (Daeid, 2013)

In the USA Over 300 Children under 14 are killed in home fires each year (U.S. Fire Administration, 2014)

Fewer than 1/3 of children who wake to fire alarms leave within 3 mins (Bruck and Thomas, 2011)

Button customisable to child’s name customisable design to suit any child’s room

e: c i o V s ’ r e h t o st name! “SIRENn”aM e! Fir t of bed! m t s r i F “ et ou Wakeeu’sp!aGfire, leave the Ther oom!” “SIREN” r

A loud (85dB) and sharp sound envelope with broadband frequencies is used to wake the child. i.e. quickly changing between a custom low-frequency voice and a highfrequency alarm. Due to maternal instinct, Customising the alarm to the mother’s voice wakes a child easiliy . (Moore, 2013)

Press once to test alarm, long press to record parent’s voice Illuminated for use as a nightlight

At least 2x as effective at getting children to evacuate, compared to a ‘standard’ smoke alarm (Smith et al., 2006)

Market Size Estimate: $270m/yr (based on number of newborns in USA & Europe with an RRP of $30 USD) (UCS , 2012) (CDC, 2016)


Bruck, D. (1999) ‘Non-awakening in children in response to a smoke detector alarm’, Fire Safety Journal, 32(4), pp. 369–376. doi: 10.1016/S03797112(98)00035-6. | Bruck, D. and Thomas, I.R. (2011) ‘Community-based research on the effectiveness of the home smoke alarm in waking up children’, Fire and Materials, 36(5-6), pp. 339–348. doi: 10.1002/fam.1081. | Research raises concerns over smoke detectors’ effectiveness in waking children -(2013) Available at: (Accessed: 30 October 2016). | Bruck, D. and Bliss, A. (2000) ‘Sleeping children and smoke alarms’, Fire Safety Science, 4, pp. 603–612. | Smith, G.A., Splaingard, M., Hayes, J.R. and Xiang, H. (2006) ‘Comparison of a personalized parent voice smoke alarm with a conventional residential tone smoke alarm for awakening children’, Article, 118(4), pp. 1623–1632. doi: 10.1542/peds.2006-0125. |U.S. Fire Administration (2014) Fire death and injury rates. Available at: order_download_data.html#download (Accessed 30 October 2016). | CDC (2016) Births and Natality. Available at: births.htm (Accessed: 29 October 2016). | Bureau, U.C.S. and Staff, D.I. (2012) America’s families and living arrangements: 2015: Households (H table series). Available at: (Accessed: 29 October 2016). | Moore, B.C.J. (2013) An introduction to the psychology of hearing. 6th edn. Leiden: Brill Academic Pub.

0-10 Years

Michael Hofmann Portfolio  

Examples of my work from 2014 to early 2017

Michael Hofmann Portfolio  

Examples of my work from 2014 to early 2017