ULTRALOQLatch 5, World's First Integrated WiFi Smart Lock (Black) with Fingerprint ID, 5-in-1 Electronic Keyless Entry Handle with Bluetooth, Biometric Fingerprint and Touch Digital KeyboardClimatePartner certified

I got my carpenter to fit this lock as part of fitting a new fire door to my apartment front entrance, therefore cannot comment on the installation process.The app is easy to download. I had to use an international phone service (Viber) to be ‘talked through’ how to set up the user for this smart lock, as I did not manage to figure this out from the written instructions that came with the lock. The customer service is in America and Australia (not the UK where I live) but the woman spent around 40 minutes with me on the phone until it was resolved. This phonecall was then followed up with an email from the company, so the customer service is excellent.You can set up multiple users for the smart lock with different codes, but it is not possible to change the code - if I ever want to change a user’s code, I have to delete the user and then re-ad them. It’s simple enough to do, but it would be better if there was the option to simply change the code without having to delete and re-ad each time. Once you know how to do this, it doesn’t take long.Very happy with the finger print access (2 finger prints per user) and also the 4-8 digit code access. I have not yet tried connecting this lock to Alexa or any of the other advertised features, so cannot comment on this functionality feature.I do keep the emergency key for the lock on my keyring along with my car key etc, and another spare key for this smart lock in a secure location ‘just in case’ I do get locked out using the digital function of this smart lock - the key hole is discreetly under the smart lock. Not yet had to use my emergency key access, but it’s good to have it available!Overall, very happy with this smart lock and the app that works alongside it. I like that with each ‘user’ you can choose if you want to add them as an ‘admin’, ‘normal user’ or ‘temporary user’. One last thing to comment on, is that this lock is not too loud to operate. There is a small beep and motor sound when it unlocks, but it is not bothersome which is great.Photo: side view of both sides of my smart lock.