Master Spa BP501G1 MS50U Control 1.0/4.0kW Flow Thru Heater X300732

Control System, Master Spas, PR-Pack, MS50U, 3rd Sensor, BP501G1, Conv. 1.0/4.0kW, Pump1 (2 Spd), Blower/Pump2 (1 Spd), w/AMP Receptacles, Less Cords and Spaside