Great for projects with two-factor authentication. During working hours, employees swipe their RFID cards. Outside these hours, employees must also enter a PIN code. The reader is also great for scenarios when you generate one-off access codes for visitors. The keypad is backlit, so you can install it in dark places. The 2N Access Unit M Touch Keypad and RFID can read cards with frequencies of 125 kHz and 13.56 MHz.