X10 4-Piece FireCracker Serial Computer Interface Kit CK18A-C. Easy to install, plug the Transceiver into a wall outlet, plug in the Interface to the serial port of your PC and install the software. Requires a PC with an RS-232 Serial Port that communicates with a free COM port. Easily expand your system by adding additional lamp modules, an appliance module or motion sensors, timers, cameras, etc. The item "X-10 FRIE CRACKER HOME AUTOMATION KIT CK18A-C" is in sale since Sunday, May 30, 2021. This item is in the category "Computers/Tablets & Networking\Software\Other Computer Software". The seller is "lfeng2003" and is located in Flushing, New York. This item can be shipped to United States.