Is There a Power Selection Switch in the Power Supply Section for the 100V and 200V Systems on the DL1500 Oscilloscope Series?

No, the power supply section of the Digital Oscilloscope DL1540, DL1540L, DL1540C, and DL1540CL automatically switches between 100-120 VAC and 220-240 VAC. The power supply section of the DL1520 and DL1520L is specified when you order the product. It does not have a power selector switch, and cannot be modified after the product is delivered.