Smart Door Knob,Fingerprint Door Knob,Biometric Smart Door Lock with App Control,Metal Alloy Door Knob,Easy Installation,Great for Bedrooms,Cloakroom,Apartments Offices,Hotel(Sliver)

Very easy to install and set up. Use your thumb to set the fingerprint. Nice looking and I totally recommend it!

Is a very good lock. Simple to use and easy to install. Works good with the TTLOCK app

Got 2 knobs about a week ago. Both have the same problems Lock keeps Fingerprint about 2 days and stops working. Have to keep reloading print. Have fresh batteries. Easy to install and very good looking. Last time lasted a 12hrs. Sending back. Save your money.

This fingerprint lock does just what it says it does. Used for two people to access a home office, it enables us to access the room with ease and keep others out. If you aren’t using chargeable batteries, be sure to change them out at least once a year. My non chargeable batteries failed after 2.5 years today, but the physical key enabled me to get in and change the batteries. After removing the batteries from the knob, and loading in new ones, our fingerprints stayed in the system and opened the door as soon as new batteries were installed. BE SURE to keep your backup keys in safe places outside of the room with the knob installed, as it will not permit entry without the key if the batteries die. Great value for the price. Well made. 2.5 years and still working!

Easy to install using basic tools. Everything is working well so far. We're successfully keeping the unwanted guest out!

I use this for my closet door as there are things in my closet I would not want my children getting to it. Very easy to install just like a normal door knob, and very easy to set up. What I like the best is I shut my closet door and I don't have to worry about if I locked it or not It's always locked on the setting I have. I have to use my thumbprint every time to open the door. It does recognize your thumb print very fast each time You're not sitting there tapping it and tapping I would recommend doing both your thumbs in case one of them are wet after doing say dishes It Will take more than one top if your finger is wrinkly from water. I don't have any cons myself and I have been using this for months now. Other than don't forget to close your door lol The worst things when you walk in your room and you see the door open that you put a door knob on to lock behind you. You can also set up different users so if you were to use this doorknob in a office for all your different departments. You can assign different people to different doorknobs you also know which person accessed the door and at what time they did. This is also great in the office I work at. And it seems to be strong enough. I would not use this as a front door knob unless you have a strong deadbolt behind it. You can also set it to alert you when the door is being opened and by who if you allow other users. Works through Wi-Fi off a program on your phone that you download from Play store / Apple store

Very effective and efficient.

Edit: Sadly, I must change from a 5 star to a 3 star. This product works amazing... as long as the battery is more than 80% charged. We notice that once it drops below that, it stops picking up our prints as easily until it drops probably another 10 or so percent, then it stops picking them up at all. We end up having to scan in our prints again. If it just happened to one person using the knob, we wouldn't think much of it. However, three of us use it and each of us scanned in a finger on each hand just in case. All prints would eventually stop working in about the time frame explained above. I choose to only go down to 3 star because it really is easy to install and works great while the battery is above 80 or so percent. We are assuming/hoping maybe we just got a fluke. That being said, I still felt it necessary to at least let our fluke be known in case it happens to others. Original review still below. Remember how futuristic the Jetsons were? With this, you will feel futuristic too! Unlock the future with the Fingerprint Smart Doorknob, where convenience meets security. This isn't just a doorknob that knows it's job, it knows you, literally by touch. With a simple touch, the door will unlock. It's as easy as "open sesame." The app control is a digital master key, offering remote access and the power to manage entry from afar. It's great if you have children who forgot their key or if you go on vacation and need to grant access for a friend to house sit. And for those times when technology takes a backseat, the key failsafe is your trusty backup, ensuring you're never stranded on your doorstep. Power it up by batteries, and this smart doorknob is at the ready. Start entering your home with style. Your finger is the key to a safer, more convenient life.