- #1
manshuk89
- 7
- 0
i have just purchased a digital lock that works on 12v dc...
the lock has a transformer and a rectifier , hence i connect it directly to the mains...
when i switch the button on, the lock opens...
now i want to connect a keypad to this digital lock such that it opens only when a correct code is entered...
my question do i need a relay to operate this mechanism..? if yes then why?
the lock has a transformer and a rectifier , hence i connect it directly to the mains...
when i switch the button on, the lock opens...
now i want to connect a keypad to this digital lock such that it opens only when a correct code is entered...
my question do i need a relay to operate this mechanism..? if yes then why?