Works on a 12A adapter. You can add 50 or more individuals to the face or fingerprint recognition, depending on the type you want. The price includes installation and a two-year warranty. It is guaranteed and secured. Monthly records can be downloaded to a computer or laptop, and there is a program that downloads them with arrival and departure details. May Allah reward you. Best regards, Engineer Owais. To contact: ( Phone number appears when clicking the contact button )