Encoder Based Length Controllers consist of seven segments and are 6 digit controllers having facility of high speed counting. The Encoder Based Length Controllers accept encoder zero/ marker input and comes in compact size of 48 X 96 X 150 mm. The Encoder Based Length Controllers also have operating voltage of 230 V AC / 110 V AC and outputs are from potential free relay contacts of 5 Amps capacity resistive load. Encoder Based Length Controllers consist of memory backup facility and external reset facility.