The control module of RAACK-series supportsthe functions below : Temp sensor : TEMP1 overheat alarm temperature 75oC TEMP2 overheat alarm temperature 60oC Fan sensor : FAN1& FAN2 speed slowdown alarm 2000RPM +5V sensor : While +5V malfunction, it will alert the users. HD LED : Indicate whether the HD is actiive or not Reset button : Reset the system Buzzer push button : Buzzer on/off