Yes, the Array is made to give you the ability to re-key. It is manufactured with the KW1 cylinder. This is so each Array Smart Lock can be repinned/rekeyed to match any KW1 lock.
You will need to hire a locksmith, if you would like to change the key cylinder to match the other locks in your home. You are more than welcome to do this.
For security reasons, we are not able not send out BLANK compatible keys for the Array Smart Lock. We apologize for any inconvenience.
If you have any further questions regarding the key cylinder in your Array Smart Lock, please open a support ticket.