600/650 Series topside control manufacturered for Sundance/Jacuzzi tubs and designed for 1 Pump System w/ Blower. Keypad is Rectangular with LED display and measures 7" x 3.25". 4 button overlay included w/Thermostat Knob (Mode, Light, Air, Jets) Comes with 20 Pin Plug w/ 4' Ribbon Cable. This Keypad is Compatible with the following series/system(s) - Sundance Proprietary 600/650 Series Control Systems. Also found in the following spa models - Sundance Models (1993-1994) Capri, Marin, Maxxus, Royale, (1994) Cameo, (1997) Calypso1, Calypso 2, Montego, Rio.