Allows user to select minimum fan idle speed between 25% & 60% of fan rating. Enables the user to activate/deactivate 'low temperature' safety feature. Temperature control range is 55 F to 95 F. 6 foot temperature probe is accurate to within 2 F. Plastic enclosure protects internal components from dust and moisture. 6 Amps/120 Volts/60 Hz. 3 year warranty.