Vermont Energy Control Systems

Practical monitoring and control for the real world


Sample application including wood boiler, heat storage, and solar panels

The standard VESTA controller supports 16 analog sensors of more than 10 different types covering a variety of parameters including temperature, pressure, humidity, and electrical current. It also provides 32 discrete inputs that can detect switch closures such as magnetic door and window intrusion switches, water detectors, and snap-action overheat sensors. All inputs can be scanned at user selectable intervals up to several times per second. VESTA provides a built-in web site that allows access from any web-enabled device. Both public and private (password-protected) web pages are provided. An included tool set allows the creation of sophisticated display panels with dial gauges, bar graphs, and other visual indicators as shown in this example.


In addition to monitoring, the VESTA system also maintains timestamped datalogs. By default it captures every input and every output once per minute and stores the data internally for 12 months. Logged data can be downloaded into a spreadsheet via the web interface. Optionally, data can also be logged to a remote database server.


The VESTA system can also control external devices. It comes with 32 'discrete' outputs that can control relays, LED indicators, or other devices (see specifications for details). It also has four 'variable speed' outlets that can be used in conjunction with optional variable speed control units to provide variable speed control of common fans, blowers, circulators, and pumps. A simple web-based rule editor allows the user to easily create rules that turn external devices on or off as needed or control speed as desired. Alarm conditions can be established and rules can define how the system responds. The system can send emails with status and/or warnings as desired.

Contact us via email at or by telephone or text at 614-918-VECS (614-918-8327).