6-in-1 Portable Detector

You plug it in and it works. It is a legal requirement ro have one. I check it monthly on the first.

This was a complete rip-off. It does not look like this, what they advertised. It is nothing more than a finger pulse oximeter which you can buy for less than half the price. They deliberately lied and falsely advised. I want my money back but of course there is no way to get in touch with them. Do not waste your time with this corrupt seller.

Doesn’t work properly. Temperature is incorrect as well as humidity. It is not loud enough to wake you up for carbon monoxide and smoke detection.