Panasonic ER-VW can utilize air flow levels starting from a minimum of 15 l/min. Because the amount of air consumed is so low, the loads placed on air supply equipment can be reduced and costly clean air can be used much more economically. The angles of the two nozzles can be adjusted within a range of approximately 190° by screwing down the ends of the nozzles. After adjusting the angle, turn the ends of the nozzles to tighten them and secure them at that angle. This allows the nozzle angles of Panasonic ER-VW to be adjusted easily after installation. The joint kit (optional) can be used to connect up to a maximum of 5 ER-VW units. The air supply part is connected via quick connection joints, and the power supply and input / output signals can also be connected easily using connection cables with connectors at both ends. Multiple ER-VW units can be connected together to provide charge removal layouts that suit the target equipment. A high-frequency 68,000 Hz AC corona discharge is used, so that (+) ions and (-) ions are emitted in rapid alternation. Because there are none of the sudden ion discharges that occur with other types, there is no tendency to partial oppositely-charging even when charge removal insulators with different localized charges, so that any damage to electronic devices can be avoided. The adoption of high-frequency AC method allows extremely stable ion balance to be achieved. The ion balance is not affected by the pressure of air supplied and the setup distance, so no troublesome adjustments are required after setup. The thickness of the unit is 18.9 mm 0.744 in. Even so, the nozzle angles can be adjusted, so that they can still be installed in places where there are space restrictions, such as inside other equipment or along several adjacent production lines.