3.2. PLCCurrently, there are many types of communication methods used for transferring information from point A to point B. Optical fiber, Ethernet cables, satellite transmission, wireless transmission, etc. are some methods to do this. It is crucial that the information transferred daily is easy to control, easy to monitor, timely and reasonably cost-effective. Power line communication is one of the technologies that meets the above criteria. This method is currently used in KNX. It uses power line supports in their layout because this minimizes wiring in the house. Further information can be found in chapter 2, 2.2. http://www.engineersgarage.com/articles/plcc-power-line-carrier-communication http://www.eetimes.com/document.asp?doc_id=12790143.2.1 What is a PLC? Power Line Carrier (PLC) Communication is a communications technology that allows data to be sent over pre-existing electrical cables. This means that the power cable can provide power and also transmit data to control a device. PLC communication provides a “wireless” method since the original wires are reused. This means that with PLC, virtually any power line can be monitored or controlled. It has become very easy to enable buildings with high-speed network points to be connected using current AC power lines as a conduit for data transfer, http://www.engineersgarage.com/articles/plcc- power-line- Carrier-Communication http://www.eetimes.com/document.asp?doc_id=1279014The table below shows the disadvantages and advantages of using a PLC in home automation, circuits and cabling.Table 8: Advantages and disadvantages of CPLAdvantage Disadvantage• More reliable than wireless networks, because wireless networks are more...... middle of paper ......wbacks and pitfalls of home systems intelligent. [ONLINE] Available at: http://smarthome.eu/bin/smarthome_guide_23_disadvantages.pdf2. http://www.divus.eu/knxcontrol/index.php/en/advantages-of-knx3. http://en.wikipedia.org/wiki/Digital_Addressable_Lighting_Interface4. http://siwawi.bauing.uni-kl.de/avr_projects/dali/5. http://htesllc.com/what_is_dali.htm dali AG6. Sharma. A (2012). Power Line Communication (PLCC). [ONLINE] Available at: http://www.engineersgarage.com/articles/plcc-power-line-carrier-communication.7. Cypress Semiconductor (e.g. 2011). What is power line communication?. [ONLINE] Available at: http://www.eetimes.com/document.asp?doc_id=1279014.8. http://www.tp-link.us/article/?faqid=4229. http://improvecellphonecoverage.blogspot.sg/2012/09/the-advantages-disadvantages-powerline.html10. http://computer.howstuffworks.com/power-network1.htm11.