The Reef Octopus USB Smart Fan will automatically increase or decrease the fan speed depending on the ambient temperature of the area surrounding the thermostat. Makes and excellent choice for aquarium canopies, enclosed stands & equipment cabinets to help regulate the temperature within.Keeping these areas cool will help reduce heat transfer into your aquarium and avoid dangerous temperature spikes while also ensuring long lasting performance of your equipment.The fan will increase speed at 90 degrees F and continue to increase until full speed at 110 degrees F where it will reach its maximum CFM. Available in a 3in and 4in model. Features Automatically ramps speed based on temperature USB power end with safe low voltage power adapter Plug and play operation 16" thermistor cord Specifications Fan Speed: 65 - 100 CFMs depending on surrounding temperature Dimensions: 4.25" x 4.25" x 1" Power Cable Length: 78" Thermistor Length: 16" Mounting Screws: 4.13" / 105mm apart NOT INTENDED FOR CONTINUOUS USE. Fan is rated for 2000 hours.
Hygger Adjustable Cooling Fan The Hygger Adjustable Cooling Fan is a quiet fish tank cooling fan with a 7-wing fan wheel that pushes large air volume at the outlet, It is designed to be energy saving with low noise generation.It comes with a controller to adjust the time on and speed. The fan also comes with an automatic switch so there is no need to switch the fan on every day, The Hygger Aquarium Cooling Fan is suitable for freshwater and saltwater aquariums less than 31.5 inches long and 0.45 inches (1.1 cm) Hygger Aquarium Cooling Fan Features One Controller can control up to 3 Fans Controller includes 5 time periods of operations from 30mins - up to 12 hours 5 different levels of speed Fan has an 180 degree adjustable head to accommodate most set-ups. Sturdy ABS plastic shell, all-copper core motor and FDB bearings ensure a long life and a quality build. Specifications of the Hygger Aquarium Cooling Fan Dimensions (excluding mount): 5.1" x 5.1" x 1.5" Input: 100-240V Output: 12v / 2A For aquarium surface area of 12" or less Maximum glass thickness: 0.45" (11mm)