ATSGP – Series ATECPOOL 3rd-gen Control Module is a medium-size die-cast aluminum and moulded-plastic box with a backlit alpha-numeric OLED (Organic Light Emitting Diode) screen and touch-sensitive keypad. It mounts on the wall by hanging the chlorinator controller. The digital display screen shows the chosen percentage of chlorine output and power bar-graph. The keypad controls allow you to raise and lower the chlorine output, view the system menu, activate the SuperCL mode, activate the Winter Mode, and display the average salinity.