Intrinsically safe, designed for the 718Ex and 725Ex calibrators Rugged construction, urethane over molding protects against shock if a module is accidentally dropped and also seals against dirt, dust, and moisture Convenient setup, one-meter cable between the pressure module and calibrator reduces the length of connecting tubing to the pressure source Modules are calibrated independently of the calibrator, and can be used with any 740, 750 or compatible 720 or 710 series calibrator