The replacement speed dial for your HyperFan V2The Phresh HyperFan V2 Dimmer is the same tethered manual speed controller the HyperFan V2 ships with, sold on its own for when the original is lost or damaged, or when you're running a second fan. It's a simple dial controller rather than the app-connected EC unit, giving you direct manual control over how hard the HyperFan V2 pulls.Running your HyperFan flat out when half the airflow would do?Leaving an inline fan permanently on full speed moves more air, noise and energy than most tents need outside peak heat, and dries the room out faster than necessary. This dimmer lets you dial the HyperFan V2 back to match real conditions instead of one fixed speed all day.Key Benefits Manual dial control to adjust HyperFan V2 speed on the fly Direct replacement for the controller supplied with the fan HyperFan V2 specific compatibility for a plug-in fit Quieter, cheaper running by matching extraction to temperature and humidity How to Use Wire the dimmer in-line between the HyperFan V2 and its power supply, in place of the original controller Turn the dial to set fan speed to current temperature and humidity Increase during lights-on heat and ease off overnight