The differences between Jalo Helsinki Smoke Alarm models.
If in doubt, there are several ways to recognise which smoke alarm model you have. Jalo Helsinki has manufactured 2 lines of different smoke alarms; 10-year battery models launched in 2017 and Original models launched in 2012. Below there are listed the differences of the models.
Batteries
In 10-year model there are no replaceable batteries at all, but only a fixed battery which you cannot visually see.
In the Original model, there are 3 replaceable Lithium coin batteries of a type CR2450.
Colors
Both 10-year models and Original models have slightly different color designs.
Original models (2012-2017)
Kupu Original models come in 6 different colors and Lento has 5 color variants.
10-year models (2017-)
10 year Kupu models come in 6 different colors and Lento has 5 color variants.
Package
In addition, the packages are different for each model
Original models (2012-2017)
Please note that also the brown carton box was used as a sales package
![](https://cdn.shopify.com/s/files/1/0671/4078/0322/files/kupu_front_480x480.jpg?v=1706027136)
![](https://cdn.shopify.com/s/files/1/0671/4078/0322/files/lento-package-front-2_480x480.jpg?v=1706027136)
10-year battery models (2017-)
![](https://cdn.shopify.com/s/files/1/0671/4078/0322/files/kupu_front_J4_white_480x480.jpg?v=1706027135)
![](https://cdn.shopify.com/s/files/1/0671/4078/0322/files/lento-package-front-2_J4_480x480.jpg?v=1706027136)