Active job

Check the house alarm & replace the lock keys

My alarm is not active looks like and I want to check it out to see if the alarm can be reactive and maybe also sense the fire too? I have attached the pix of the alarm. The front door and the back door has two way locks, but, the previous owner did not pass the keys, I am wondering whether we could replace the keys. Depends on the cost, if the replace for the lock is the same for replace the keys, I rather replace a new lock.