Features: 1. Compatible replacement for Sundance, Jacuzzi, and Sweetwater hot tubs and spas, designed to replace part numbers 2560-040 and Q12DS-C2. 2. Fits multiple models including Sundance 680/780/880/980 series, Jacuzzi J-500/J-400/J-300/J-200/J-100 series, and Sweetwater 2003-2004 models. 3. Durable clear plastic housing with brass wire and insulated rubber cable for reliable conductivity and resistance to corrosion, heat, and wear. 4. Includes 3/32 inch hole opening; compatible with 0.85 inch hose connections and 0.4 inch freeze line connection. 5. Easy to install with directional arrow labels; displays FLO, FLO2, and flashing FLO error messages. Product Details: Specifications: Replacement part numbers 2560-040, Q12DS-C2; hole size 3/32 inch; hose connections 0.85 inch; freeze line connection 0.4 inch; material: clear plastic, brass wire with rubber cable; includes curled finger connectors. Compatible with select models only; do not use on 800 series.