An integral part of any Home Automation System. Simply stated “Heating, Ventilation, & Air Conditioning”. These devices include Thermostats with X-10, RS-485, or RS-232 interfaces that allow remote control using X-10 transmitters, Receivers, or Computer Control. A great way to save energy, these thermostats can be controlled from within your home or on the road. Also included are motorized dampers to control air flow, and remote temperature sensors to monitor remote (outdoor) temperature. Combined with X-10 Computer Control, these devices can be “set back” for energy savings any time you leave your home for any length of time.