Self Catering Guesthouse Automation – Arduino

I am an electrical engineer and I have developed a solution to remotely control electrical circuits at our self catering guesthouse, Umoya Cottages in Port Elizabeth. Even when we are not at home, we can securely log in over the internet to switch on lights, geysers and even open the motor gate. In combination with the CCTV over the parking lot, I can for example open the gate for a guest and switch on the external lights, even if I am overseas. All I require is an internet connection and it is as good as if I am back home. And the best part, the whole setup cost me less than R1500 ($130).