This is a solid smart lockset. I replaced a standard keyed lockset with this one and it works great! It's installed on an upstairs room where we store important papers and what not - not maximum security or anything, but a place we would rather not have someone getting into. Looks awesome and works just as good. We have another smart handset on an entry door which also uses the TTLock app, so that's a big bonus. It took about 30 minutesd to remove the old lockset and replace it with this one. No addition drilling was involved - everything just fit. It takes 4 AA batteries (not included), but if they ever run out and you can't get in, there's an emergency USB (mini) port to power the lock to get in. There is also the standard key type lock cylider hidden under a small panel so you can get in the old fashioned way if you need to. It does not talk like our other lockset - it just makes beeps, etc., but that's fine. The only thing I didn't like is the latch plte - it's more of a silver color vs. the matte black of the unit itself. It comes with two RFID "keys" which are easy to program via the app, as well as two regular metal keys. User codes and fingerprints are also easily programmed via the app. There are virtually unlimited to program different types of access codes - timed, scheduled, etc. for cleaners, renters, short term guests, etc. The price is good compared to "name brands", and it functions just as well. Wish it integrated with Alexa or Google, but you can't have everything. I would not hesitate to get another 2 or three when I replace more locksets. Nice product!