|X10 - Lamp Module|
"X10 is a protocol for communication among electronic devices used for home automation (domotics). It primarily uses power line wiring for signaling and control, where the signals involve brief radio frequency bursts representing digital information." ref
I am using an X10 CM11A serial adapter module, connected to RaspberryPi, to control the X10 modules. I use the Linux Heyu software to communicate with the X10 modules through the CM11A serial adapter module. I have an X10 Lamp Module that automatically lights up when someone walks by the home security system's motion detector (also connected to the RaspberryPi), and I have an X10 Appliance Module that kills power to home entertainment system. Originally I wanted to control the power to some computer systems, but the power supplies in the computer systems then introduce too much noise to get a response from the X10 modules.
See also: label:x10, Omnia:X10, Omnia:heyu