Smart Lock that can be access using Android phone

Hello!
I want to add security locks in my house. I want to know how to install Danalock Bluetooth Smartlock? How much does it cost? Does it works with Android and iOS? What are the system requirements? In case of emergency can bypass the security lock? How many phones are allowed to communicate with this device? How far can I access the security lock? What type of doors I can use this device? What are the parts included?
