Operated with water or oil,select water or heat transfer oil 1.depends on the need; 2.Accurate automatic temperature control able to stablilize required emperatre 3.Completed safety devices:auto-alarm system jfor water/oil shortage,low/over heat temperature,supply pump overload and auto circuit shut off; 4.Stainless steelpail allowed rust free,without leakage problem & long hours operation 5.Adopts PID thermostat to provide dual(heating & cooling) control,maintains temperature, Precise temperature control within ??C. 6.Saving energy $user friendly,no training required; 7.Strong cooling system without adjust thermostats,able to cool system apidly; 8.Simple and easy to operate.