Keyless combination-lock types come in two variants: a free-dial version where you set your preferred number, and a fixed version with a pre-set number.
Literal
Key [attributive-の] unneeded combination-type [to-には], favorite [attributive-な] number [object-を] can-set free-dial-style [and-と], beforehand number [subject-が] set-already-[attributive-の] fixed-style [and-と] [subject-が] exist-[polite-あります].
Product description. 暗証 ('secret code, combination') as in 暗証番号 (PIN). フリーダイヤル here is a wasei-eigo term meaning 'free-dial (freely settable dial)' — distinct from the other meaning of 'toll-free number.' ~と~とがある ('there are X and Y') is the formal listing pattern.