The voltage selector supports multiple voltages. The range varies according to the model. CPUAC600: 3V, 4.5V, 6V, 7.5V, 9V, and 12V. CPUAC1U1300: 3V, 4.5V, 5V, 6V, 7.5V, 9V, and 12V. CPUDC1U2000: 3V, 4.5V, 6V, 9V, and 12V.
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