The USB INSTEON PowerLinc Modem is a serial-based home automation interface that allows PC- and hardware-based automation controllers to control INSTEON-compatible lights, appliances, heating/air conditioning systems and alarm systems directly via the INSTEON network. The dual-band interface sends and receives both powerline and radio frequency (RF) INSTEON signals, so it doubles as an Access Point. This makes it ideal for new INSTEON installs and if have or plan to use an RF-only INSTEON-compatible remote, thermostat, motion sensor and contact sensor. Please Note: The controller connected to the USB INSTEON PowerLinc Modem must remain powered on and running the controller program connected to the controller or host at all times of usage.