COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver)

I installed the smart door lock I bought on Amazon yesterday, and the experience was great! The installation is relatively smooth, similar to installing a regular door lock. After downloading the TT Lock APP, it is super convenient to setup the lock’s features. Whether it is setting the password or other relevant function settings of the door lock, it can all be completed through the TT-Lock APP from a phone with a few touches. Using password, touch card or mobile phone to open the door is very convenient! I do not need to remember to bring my key anymore whenever I go out! Overall, I am very satisfied with this lock! Thanks!