Unlike other inline fans, the AC Infinity Cloudline Series has a digital controller and attachable probe to detect temperature and humidity. With its temperature and humidity programming, adjustable fan speed control, timer, and alarm system, you won’t have to stress over the progress of your grow making it much easier to manage. Simply program you controller to trigger and run at customizable speeds when given power. Set your high and low temperatures and high and low humidity triggers at the speed you need to ventilate. The controller also has backup memory so it won't forget what you set your triggers to. Product benefits: Humidity Control; Air Circulation; Adjustable; Quiet Operation; Easy Maintenance; Compact; Indoor. Specifications: Length: 15.20 Inch; Height: 11.30 Inch; Width: 9.81 Inch; Controller Cord Length: 10 Feet; Cord Length: 8 Feet; Sensor Probe Length: 144 Inch; Total Airflow: 1201 CFM; Noise: 48 dBA; Static Pressure: 1059 Pa; Input Voltage: 100 - 240 AC Volts; Consumption Wattage: 255 Watt; Consumption Amperage: 2.7 A; Power Connector Type: US Plug (NEMA 5-15 Type B); Operating Humidity: 35 - 85%; Operating Temperature: 0 - 60 °C; Waterproof Rating: IP-44; Bearings: Dual Ball Bearing; Rated Life: 67,000 Hours; Inside The Box:; Fans: 1; Controllers: 1; Power Cords: 1.