KNX, origin of the word is Konnex from Latin dictionary means connection. And is the globally standardized wire line system for the residential & non residential building automation, and have successfully replaced the 75% of predecessor market. It has replaced EIB (European International Bus), EHS (European Home System) & Baitbus which was use mainly in France.

Light Fidelity Li Fi is the youngest member in communication technology. Li Fi is the Light Fidelity wireless communication technology with the limitless capacity, secure and versatile. It uses the   electromagnetic spectrum to transfer the data using the visible light communication not the radio frequency. As the light energy is used for communication, the interference with the electromagnetic devices does not arise.

Z Wave for home automation is generally used in many projects. Hard work pays & smarter is better. So is the Z Wave, the communication protocol designed to transmit the data packets at 100 Kbps. A start-up namely Zensys founded by two Danish engineers, developed Z wave. Idea came simply in mind by developing something for their home, but something great was destined. The company started selling a chip for home automation, ASIC (Application Specific IC) together with their own firmware, hence an ecosystem for compatible devices of other manufacturers.  USA was the first big market for Zensys products, & Merten of Germany announced first Z wave based lighting system and finally Zensys was acquired by Sigma Designs in 2008.