Check the listing for details. itronix T3500 Handheld Meter Reading Portable Computer w/Battery & Hand Strap. Condition: New. Listed at 359.99 USD. Itronix' T3500 is a popular handheld computer that brings together the latest component technology and functionality, delivering outstanding meter reading performance and processing speed in a small package. The T-3500 can read gas, water and electric meters - even from the street!The lightweight, rugged handheld computer boasts an internal radio that allows for seamless data collection, resulting in improved data collection and faster reads for enhanced productivity.Built in a polycarbonate plastic housing that is shock absorbent, The T 3500 is designed for use in all weather conditions. It is water and dust proof and works well under extreme temperature conditions.With the two interfaces, other peripherals such as printers and optical readout heads can be easily connected to this unit.The unit is powered by rechargeable NiCd batteries.