DR3 is standalone door access that does not need any software. It can be used in a small office that has a limited budget and only requires the simplest door access.

How does the standalone RFID door access control system work?
Green LED will blink with one beep sound to indicate successful reading. Red LED will blink with two beep sound to indicate invalid reading. You can easily add and delete cards using the master card. There is no need for any programming. For future maintenance, it is recommended to keep the master card in a safe place for future enrollment/delete card.