Suits all output equipment - 2 speed pumps, single speed pumps, blowers, etc (all but 2 speed pumps utilise 3 out of the 4 wires) Used on Balboa, and many other USA made spa controllers. These cordsets do NOT have moulded plugs to comply with double insulation and strain relief standards. Therefore, their application is limited. They are designed for use with Balboa spa control systems where they plug directly onto the circuit board and the cable is strain relieved as it enters the control box. Leads are 2.4m long These cords should not be used with Spaquip controllers.