TTLock

The app works fine...I have multiple door locks and all work just fine as long as I use an accessory Bluetooth/wifi hub is used. other than that all RFID, passcode, watches, fingerprint work as specified. I had an issue with my second lock after a couple of months and talked with customer service and they sent me a replacement and RMA and shipping label to return the original. btw, the padlocks on my outside sheds work great too!

Answer to common question: When Ttlock asked for a password to link Alexa, it wants the TTLOCK user name and password, NOT your Amazon password. I left a previous review complaining about the same thing. The random characters don't seem to matter. I did have to enter the information twice. As for the app itself, it still socks. It's not very intuitive and is obviously a Chinese translation. There's quite a learning curve, but it can be figured out with patience.

Really impressive features. I actually like the app and so long as you follow the instructions it will work for you too. Obviously bluetooth has its limitations and so long as you have invested in the hub for the lock to connect to the internet and all are in range then it works fine. I like passage mode so you can keep the door open for short periods and the fact the you can invite people or issue temporary codes. being able to operate from a distance has been great for the unexpected.