Procool model SXT80 fans are temperature controlled automatic on/off with variable speed, ranging from 1200 RPM to 2400 RPM at full speed. Each fan has a temp sensor that should be located on or near the heat source. The sensor tells the fan when to start and stop and how fast to run. When the sensor detects heat above 75-77°F the fan will start. As heat increases the fan speed will increase. The fan will reach full speed of 2400 RPM at about 104-107°F. The fan temp sensors can be moved closer to the heat source to optimize or fine tune fan operation. As temperature levels drop the fan will slow down. Once the temp falls below 75-77°F the fan will shut off. See the chart below for illustration.
Note that temp ratings have a +/- 3% variance.
✓ Quiet operation - 6-14 dBA
✓ High Airflow - 14-32 CFM
✓ 2 Year Warranty
Temperature probe and Power connector