The Viqua 660018-R is replacement power supply kit (also called a controller) that is used to replace the power supply of a Viqua system. The 660018-R is the newest version of the company's line of G, H, J, and K/Plus controllers and is used for the Viqua K system. The Viqua 660018-R plugs into a wall outlet and acts as a transformer - taking the native voltage and amperage and converting it to the proper voltage and amperage for the UV lamp. It also provides valuable information to the UV system operator in the way of a digital readout, making it easy for you to determine UV purification levels and the need to replace the controller again.Operates at 100-240V and weighs at 3.6 kilograms.Simple plug-and-play, color coded connectionsHelpful lamp replacement reminderLamp timer reset buttonIndicator lights show status of system componentsMute button for warning alarm soundsCompatible with K, S80 Professional UV systems