Comparison Betweenthe                       Enerac 500          Testo 330

Options

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O2                                                            Y                 Y

CO                                                           Y                 Y

COMBUSTIBLES                                   Y                 N

CO2                                                         Y                 Y

NO                                                            Y                 Y

NO2                                                          Y                N

NOX (TRUENOX)                                 Y                 N

SO2                                                          Y                 N

SMOKE                                                    Y                  Y

AC/DC                                                      Y                  Y

DRAFT                                                      Y                  Y

TEMP.                                                       Y                  Y

EXCESS AIR                                            Y                  Y

EFFICIENCY                                           Y                 Y

STORAGE                                             100               200

EMISSIONSOPTION                            Y                 N

PRINTER                                        INTERNAL         SEPARATE

THERMO-COOLER (FORNo2 & So2)   Y                 N

WEIGHT                                             3LBS                   1.5 LBS

BLUE-TOOTH                                         Y                  N

METAL CASE                                          Y                  N

SOFTWARE                                            Y                  Y

MADE IN THEUSA                               Y                 N