The Premier Vision keypad is designed for use with DIGI, DIGI Pro and Lock+ digital software boards. If you have questions about which is right for your application, consult a member of our sales team. 9V battery access is via a sliding door at the keypad base. No additional parts are needed to convert to rotating for use with our EM35-60 Straight Bolt lock. Stocked in Black Velvet or Satin Chrome metal.