Recirculation Pump Controller with Real Time Clock is equipped with inbuilt fuses and can measure motor current and displays. The Pump Controller ensures that the water at the receiving point at the delivery pipe, where the temperature sensor is fixed, recirculates the water back to the tank by switching on the recirculation pump, till the temperature reaches the desired value at delivery point. The Pump Controller has an on line rechargeable Ni-Cad battery backed Real Time Clock. Recirculation Pump Controller with Real Time Clock performs e PC Communication through RS 485 MODBUS standard.