The DynaSense® MK III is a universal digital proportional or on/off temperature control which allows instant system setup. These controllers provide pinpoint accuracy of heating and cooling devices through the use of two position, on/off control action, operating alternately and independently with true proportional cooling algorithms. The temperature change of the input sensing devices is analyzed by an 8-bit microprocessor which controls a high current, electromechanical, two position relay in direct relation to system demand and deviation from the temperature setpoint. Typical control accuracy is ± 0.02°F. Indicating accuracy is ±0.25% full scale, ±1 digit.