I am using this system at my home, i have done also the circuit for controlling 220V equipments, it doesn't need relays as i hate their rumor, i have done it it with thyristor. The only disadvantage is that it is needed to extend new lines at home or if the existing electrical system uses "step by step fuses" (i am not sure about this term in english language but in italian it stands for "interrutori passo a passo"), it is not needed to extend new wires. I will publish my work here as soon as i will get free time.