The Doorking 1804-056 Keypad replaces damaged keypads in Doorking systems. You don't need to replace the entire panel because one or two keys wear out. Simply replace the keypad. This Doorking Manufactured Keypad specially designed for the use with the Doorking Operators, Compatible with: 1802-090, 1834, 1835, 1837. Keypad (with letters) and Ribbon Cable Kit.