Most minisplit systems use a combined signal and power cable. This engineering feat allows you to install the indoor evaporator units with only one combined wire set running to the outdoor condenser unit instead of having to run additional outlets to every location. Not only does this setup save on installation and materials costs but it also allows for easier troubleshooting and diagnostics as all the wiring is in one, combined, simple space that is easy to access and maintain. Installers and HVAC technicians will be interested in our Bulk purchasing options.