Fluke 28 II Ex/ETL Intrinsically Safe True RMS Digital Multimeter 4017176 is capable of being used both inside and outside ATEX zones 1, 2, 21, or 22 to get the job done with one instrument. Extremely durable meter to handle any conditions Mother Nature might throw its way. The Fluke 28 II Ex Intrinsically Safe True RMS Digital Multimeter measures AC/DC Voltage, AC/DC Current, Resistance, Conductance, Diode Test, Duty Cycle, Capacitance, Frequency, and Temperature.