The main concern at the moment is security. Though it comes in the form of a Standard LCD Controller with three control modes (M4, M6, and M8). Real-world analog visual signals are transformed into digital signals by the Standalone LCD controller.
The Harbor City Standard LCD Controller was specifically created with a variety of uses in mind. A standalone LCD controller’s fundamental mode of operation is You must either display your card, input your pin, or do both in order to enter the premises. Because of the built-in watchdog feature, it never hangs. The door won’t lock for a while if someone tries to intrude in your privacy; instead, an alarm will buzz out and beep twice.