Product Power: 3KW. The water heater will start to work after the bathtub is filled with water. It is specially designed for hot and cold bathtubs and suitable for bathtub SPA. The bathtub water heater should be connected to the tubing circulation system, and can also be connected to the inlet and outlet of the bathtub pump to ensure that the direction of water flow conforms to the instructions on the bathtub water heater.
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