The 707Ex is an intrinsically safe loop calibrator for use in explosion endangered areas. The Fluke 707Ex is certified in accordance with the ATEX directive (Ex II 2 G Ex ia IIC T4) in Zones 1 and 2. Features a large display and simple quick-click push rotary button, simultaneous mA and % readout for quick, easy, interpretation of readings, and 1 µA resolution for mA source, simulate and measure.