TrolMaster Hydro-X AC Remote Station (ARS-1)TROLMASTER HYDROX AC REMOTE STATION The ARS 1 mini split air conditioner controller is a unique product that solves the age old problem of having separate day and night temperature settings on your mini split air conditioners. The ARS 1 is a universal controller that works with most mini split air conditioners (and some window type AC units too), as long as the unit came with an IR infrared remote controller. We use the remote control that came with