With built-in sensor checks and a Calibration Control Kit sold separately, verifying calibration is literally effortless. Simply turn on the self-check feature and every time the system is powered on, calibration will be confirmed. If your HACCP or GMP program calls for additional calibration assurance, use the Calibration Control Kit to verify the system is in working order at any time. With the internal self-check and the calibration kit, you’ll always be confident the system is within specifications. In addition, you’ll avoid costly and inconvenient yearly calibration charges that other manufacturers require.