Early technologies for smart homes include three majors:(1) Bus technology class: bus technology is mainly characterized by all the communication and control of all devices are concentrated in a bus, the product module has the ability of two-way communication, as well as interoperability and interchangeability, its control components can be programmed bus technology products. But his general setup installation is a bit complicated, long duration, the cost is also high, suitable for new users.(2) Wireless communication technology category: wireless communication technology has a lot of successful application in the field of smart home wireless communication technology, the main programs are: RF technology, VESP protocol, IrDA infrared technology, HomeRF protocol, Zigbee standard, Z-Wave standard, Z-world standard, X2D technology. The main advantages of wireless technology solutions, installation dexterity and convenient, no need to rewire, can be based on the need for any time to expand and modify, suitable for newly renovated users and installed users.