The LiftOperator Intelligent Control from SR Smith is the most technically advanced pool lift control out there. The red emergency stop button will stop the lift mid-cycle. The LiftOperator ensures user safety by also having an audible safety alert. The controller has an internal memory that will store information about the lifts usage that can be pulled with an USB drive and uploaded to your very own computer. The 2 button control is used with the multiLift and the 4 button control is used with the aXs, Splash, and PAL pool lifts.