20 months after the purchase and the detector is still active. I hope it is also functional because it is easy for someone to forget to change them.

I had concerns about whether it would work at the right moment, and it ended up working just fine. The sound is really deafening, even the elderly with hearing problems can hear it.

Nedis as a company has won my sympathy, mainly for its excellent quality-price ratio in electrical and smart appliances. A trustworthy detector, good quality, it works in the test, now in practice, hopefully we will never have to find out...