[General] Attn: Bob

[CG]

Bob,

It appears that what I have left are a couple of electrically operated 
strikes.  These are mortised into the frame instead of the door. This is 
the way most electrically operated doors are operated as it simplifies 
wiring and requires no change to the key/lock mechanism (which I am sure 
you know). You can also continue to use a key as a backup of course. You 
may not want to modify the door jam as you have a rental property. The 
other problem is that they probably will not operate with the dead bolt 
but only the latch mechanism. However, they might work if the geometry 
is right.   But, they are  not as secure as a standard dead bolt 
operating into a reinforced socket.

There are electrically operated dead bolt mechanisms available such as 
you have cleverly  jury rigged, they require no modification to the 
door, but I do not have one and I think they are pricey.

I also have some external keypads meant for this application.  You 
probably already have keypads.

You can buy RFID readers and cards embedded with RFID chips fairly 
inexpensively that interface to Arduino boards.  (I know because I 
bought one... but returned it...long story).    I am sure you can also 
get data strip cards and programmers fairly inexpensively as well.

I also have an excellent fax unit (and manual) gathering dust  But, of 
course any P.C.  can serve as a fax now.

I have the other item we discussed.

So, if any of this is of interest, email or call me at (880 6896) and we 
can make arrangements to get it to you.

Best Regards,

Chuck