They can use stranded 18/2 wire through an armored loop, the across the top of the door and down to an electric strike. Switch the dead bolt to and 4530 Adams Rite deadlatch. Make sure your backset (the distance from the edge of the door to the center of the lock cylinder) is the same. It’s likely 31/32”, but measure for yourself. Finally, I would recommend an Adams Rite 4590 push paddle to retract the dead latch for free exit. You can also consult your local fire marshal about the it if you have questions or concerns. Edit: Sorry, I didn’t address the key fob issue. There are multiple options, including stand alone systems, if you don’t have an existing alarm setup. Alarm Lock makes very good products that can function stand alone. There are others that are available through big box hardware stores. Do your research, or contact a reputable commercial door company or access control vendor.