As technology advances, so do homes. Modern homes are gradually transitioning from traditional switches to centralized control systems using remote-controlled switches. Traditional wall switches, which are now placed in various parts of the home, make it difficult for users to access and operate them. Operating the switch is even more difficult for the elderly and people with disabilities. Therefore, in this paper, a home automation system using an Arduino board with Bluetooth that can be remotely controlled from an Android OS smartphone was developed. Remote home automation systems offer the most modern solutions using smartphones. The performance of the proposed model system has been tested on PROTEUS software package, and it is very reliable and user-friendly to the occupant for easy control of the home or office appliances via the Bluetooth of the smartphone when the user is in a remote area. Moreover, the power consumption was mitigated during the operation of the devices. The final prototype was developed and upgraded with a high security lock interface.