We have Automatic Control Unit for Salt and Resin based Water Softener. The control unit ensures the uniform hardness level in the water. The existing resin and salt based units can be converted to automatic recharge units whereby uniform hardness of water be maintained. Working Principle: The controller unit along with all other acessories will be installed The controller start monitoring the hardness of water and regulates the softener operation thereby to maintian uniform hardness through out the entire process. Advantages: Maintenance free automatic water softener due to Automatic Controller Only salt has to be put in the salt tank as u find time The controller takes care of fillling water into salt tank, process the salt and recharging the water softener.