Opening and closing of direct acting 2 port solenoid valve. Although it is using the floor-standing foot stepping specification before sinking, water enters inside and causes malfunctioning. Although the use environment is certainly a water field, it is not an environment where water like the kitchen flows. Even though I tried to block it with vinyl tape etc. in view of the code, etc. even though it passed the cord, but still water entered inside. Is it kind of condensation? This may already be a product specification or design problem. Because this phenomenon does not occur if I exchange it for M4 type foot pedal of the company, it feels like that.