The motor voltage of the massage chair is 220 volts, which becomes 24 volts after passing through the transformer to provide power for the motor. Because China's household power supply generally uses 220-volt unidirectional alternating current, the input end of the motor power supply of the household massage chair uses 220-volt single-channel alternating current, and the power supply used by the motor through the transformer is 24 volts, which can provide power for the massage chair.