The Ultima Controller provides complete access to all advanced features of the Ultima and Ultima X Gas Monitors, as well as the Toxgard II Gas Monitor, through its full-function keypad. The controller is used to set the real time clock, set alarm levels, change span-gas values, display date of last calibration, display minimum, maximum and average gas values, change address and set future calibration time/date in addition to providing basic calibration functions. It is completely password-protected.