Automatic water softener Electronic WS1TC Clack valve 1 " (Reg. Time).Low consumption of water and salt per regeneration. Valve body made of Noryl plastic material, NSF listed. Programming is simple and fast, just enter the time, day of week, time of regeneration, typically 02.00 at night, number of days between regenerations and hardness input. Complete with plug adapter 12/230V - 50Hz European plug. Hardness regulator output. Is required output minimum hardness of around 15°F, but the most commonly used