IZYX SYSTEMS Code keypad / AXK3 RFID reader with remote electronics, metal housing, IP64, MIFARE 13.56 MHz, screw terminal block, 12V to 24V AC/DC, 999 users, 2 changeover contacts, status LEDs, buzzer, alarm outputs: POTL (door open too long), PF (door forced open), UF (fraudulent use), AP (keypad self-protection).