The document describes the i.roc® Ci70-Ex, the first intrinsically safe PDA approved for use in hazardous environments like gas and dust. It has a modular design that allows different heads to be attached, including barcode scanners and RFID readers. This makes it suitable for applications in industries like oil/gas, chemicals, manufacturing, and others where combustible gases or dusts are present. The PDA has long battery life, rugged design, and certifications that allow use in areas requiring explosion-proof equipment.