Often, for various reasons, the arrival of guests to the booked room may occur with a large time delay...

A simple and convenient solution for everyone to organize guest access to reserved rooms is to install a Code Panel at the front door of the mini-hotel and TTLock Door Handles on the doors of the mini-hotel rooms:

Such an access control system can be built with or without Internet control.

Typically, mini-hotels always have high-quality Internet and WiFi, so the optimal solution would be to use the AC-03C9 Code Panel, ELH -80, -82B9 Door Handles and the ACA-20C9 WiFi Gateway.