Modern-day Malacca is a vibrant old city with a unique historical and cultural background from being the capital of a powerful Malay kingdom before the colonial era, as well as subsequent Portuguese, Dutch and British rule. The city centre was listed by UNESCO as a World Heritage Site in July 2008, many tourists come to Malacca to visit historical sites and tourism, so homestay facilities need to be available to their families Homestay a stay at a residence by a traveller and especially by a visiting foreign student who is hosted by a local family. In this study, propose a smart digital door lock system for homestay system. A digital door lock system is equipment that uses the digital information such as a secret code, semi-conductors, smart card, and finger prints as the method for authentication instead of the legacy key system. In proposed system, a ZigBee module is embedded in digital door lock and the door lock acts as a central main controller of the overall homestay system. A door lock system proposed here consists of RFID reader for user authentication, touch LCD, motor module for opening and closing of the door, sensor modules for detecting the condition inside the house, communication module, and control module for controlling other modules. Status of individual ZigBee module can be monitored and controlled by the centralized controller, digital door lock. As the door lock is the first and last thing people come across in entering and leaving the homestay respectively, the homestay automation function in digital door lock system enables user to conveniently control and monitor homestay environment and condition all at once before entering or leaving the house stay. Furthermore, it also allows users to remotely monitor the condition inside the house through Internet or any other public network.