AC Infinity CLOUDLINE T4 4-Inch Inline Duct Fan with Temperature/Humidity Controller

The CLOUDLINE T4 pairs the same 4-inch PWM-controlled EC fan as the S4 with an automated controller that reacts to temperature, humidity, and VPD triggers instead of running at a fixed manual speed. A minimum-speed floor, timer, cycle, and schedule modes, and WiFi connectivity through the AC Infinity app give it the kind of hands-off control that a rack closet or equipment room can just leave running.

The included probe reads conditions from 12 feet away, so the sensor can sit inside the space being monitored while the controller stays accessible. It shares the S4's dual ball bearing construction, rated for 67,000 hours, and runs from a standard 100-240V AC supply.