The Flow Sensor – Candela Gentle Pro Series is a replacement component designed to monitor water circulation within Candela Gentle Pro laser systems. It works in conjunction with the Iwaki pump to ensure proper coolant flow and communicates circulation status to the control interface. This part is compatible with GentleYag Pro, GentleLase Pro, GentleMax Pro, and GentleMax Pro Plus systems, and is intended for use by certified technicians during routine maintenance.