AC Infinity Cloudline S4 EC Fan + UIS Controller 67

Save $7.00

Sale price$189.00 Regular price$196.00


AC Infinity flagship cloudline EC fan including their UIS Controller 67! Save money with this fan and controller combo! This controller is Bluetooth only and can not balance two fans of the same size (which isn't an issue if you have your outtake bigger than your intake)

Save money with this fan and controller combo!

UIS Controller 67
  • A digital controller designed to equip AC Infinity fans with smart controls for HVAC or growing applications.
  • Dynamically adjusts fan speed based on temperature and humidity conditions to produce optimal airflow.
  • Programming includes automated triggers, timers, cycles, scheduling, minimum speed, and custom transitions.
  • Features a powder-coated black body with a digital LCD display and a corded thermalloy sensor probe.
  • Supports up to two CLOUDLINE, AIRLIFT, or CLOUDRAY fans with EC motors to share the same programming.

A digital controller designed to enhance your AC Infinity fan with smart controls to maintain a stable climate. This intelligent command unit features a black powder-coated body and a backlit LCD screen that presents a sleek aesthetic. The display has three brightness levels, as well as two auto-brightness settings, and reads temperatures in Fahrenheit or Celsius. It includes a 12-foot sensor probe with a waterproof thermalloy head that accurately detects current temperature and humidity conditions. The controller’s 4-pin Molex fan ports can simultaneously power two fans to share the same fan speed and programming. Functions include automated triggers, timers, on/off cycling, and scheduling.


The smart auto modes trigger your fan to activate in response to climate changes. Its fan speed can dynamically adjust itself to current temperature or humidity levels, producing optimal amounts of airflow. The fan speed can also operate in an optional minimum setting to maintain cooling and ventilation. Timer, on/off cycle, and schedule modes add custom on-demand activation for a variety of uses.

AC Infinity Cloudline S-series Fan 

The one and only. AC Infinity fans. Energy-efficient, quiet AF and value for money. These S-series come with an 8 speed manual controller 

  • Features an 8-speed manual controller utilizing PWM. See Controller 67 for temperature and humidity controls.
  • Mixed flow design combined with a PWM-controlled EC-motor for a truly quiet and energy-efficient performance.
  • Kit also includes corded AC power adapter, installation manual, and all necessary mounting hardware.

Features an inline speed controller utilizing PWM (Pulse Width Modulation) technology. Contains an EC motor for a quiet and energy-efficient performance. The motor box containing the fan’s impeller and blades can be detached from the mounted frame for easy cleaning and maintenance. Complete kit includes one duct fan unit, one inline speed controller, installation manual, all necessary mounting hardware, and all necessary mounting hardware.


The inline speed controller enables you to set the duct fan’s speed to optimal noise and airflow levels for various environments. Unlike common AC-powered duct fans that suppresses voltage to control fan speeds, this duct fan features an EC-motor that is precisely controlled using PWM (Pulse Width Modulation).

This technology enables the fan's motor to be able to run smoothly at extremely low RPM speeds without generating motor noises and heat as seen on variable voltage controllers.

Eight-speed options are available with a power switch, and backup memory.

Product Model AI-CLS4 AI-CLS6 AI-CLS8 AI-CLS10
Duct Size 4" 6" 8" 10"
Total Airflow 348.29m3/h 683m3/h 1371m3/h 2040m3/h
Fan Dimensions 18.8 x 30.3 x 17.6 cm 21.2 x 32.0 x 20.0 cm 21.7 x 30.2 x 12.3 cm 24.9 x 38.6 x 28.6 cm
Total Noise 28 dBA 32 dBA 39 dBA 48 dBA
Cord Length to Controller 240 in 180 in 240 in 240 in
Cord Length to Plug 96 in 108 in  96 in.   96 in. 
Static Pressure 223 Pa 503 Pa 746 Pa 352 Pa
Max Power Draw 28 W 64 W 110 W 250 W
Average Power Usage 21 W 38 W 78 W 136 W
Current 1.2 A 1.67 A 2.27 A 2.7 A

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