Waterproof structure (equivalent to IP67)
By integrating a one-piece pump body, sealing portions are reduced in number to prevent liquids from entering due to sealing defects. A rubber gasket is provided between the pump head and the bracket to prevent water from entering through the periphery of the pump head.
To keep the controller unit watertight, a plastic cover with gasket is provided as standard equipment.
The adoption of membrane switches for the controller panel is another measure for the prevention of liquid penetration.

Moistureproof structure
The electronic parts and printed board have been molded from resin. This prevents dew condensation and short-circuiting caused by atmospheric gas.

High resolution
For discharge flow adjustment, a dual control system which controls the length of stroke and the number of strokes is employed. Since stroke by stroke adjustment is possible, the discharge rate can be controlled in a wide range from a minimal flow rate to a maximum discharge.

Controller
The controller has a CPU. Both the stop function and the external function are included as standard equipment. As the display for the number of strokes, a high-temperature resistant LCD is employed to allow long-term exposure to the direct rays of the sun.