The specially designed digital keypad can be easily installed as a wireless or wired keypad. It can be programmed to use up to 25 different personal identification number (PIN) codes including one temporary timed code. Each code is face programmable with additional security features built in. Can be wireless or wired to your opener. Requires 3 AA batteries (not included). Wired installation requires 16 gauge, low voltage, multi-stranded, dual conductor,direct burial wire (sold separately).