My keypad lock has a vertical row of 5 plain metal buttons: is this an EZ series keypad?

Answer

No this is a mechanical push button lock, made and supported by KABA Simplex.

Our Simplex support articles can be found here: https://kb.dormakaba.com/hc/en-us/sections/40172824749851-Simplex-5000-Series 

Applies To

Keypad Locks

Additional Information 

KABA Contact number is 800-849-8324.