Kupu is a photoelectric smoke alarm, designed by internationally famous designer Harri Koskinen. The whole product is convenient for you to install and use. There are no tiny push buttons, and the whole external casing acts as a press switch for silencing false alarms and testing the performance of the product. Installing takes merely a few seconds with double-sided 3M tape or screws. The battery can last for 5 years and the smoke alarm has a warranty of 5 years (excluding the battery). Kupu is the winner of Reddot Design 2011 and Wallpaper Design 2012. "Updating the smoke alarm was very important to me. With the help of good design this safe and essential product can be recreated as something interesting and desirable. I hope Kupu finds it way to every home and workplace" Harri Koskinen.