Automated record keeping and calibration system does not require a computer or network interface. Extremely easy to use, versatile, expandable up to 10 units and works with the touch of a single button. Minimal training required. Inventive system door also functions as dust cover. Guaranteed to work in the harshest environments. All-inclusive, 2-year warranty with a very low total cost of ownership. Include (1) complete Galaxy System, N. American power supply, instruction manual, required filters and tubing.