Epson TM-L500A RFID Technical Reference Manual page 44

3
Connect the plug of the AC cable to the wall socket.
 Be sure to unplug the AC cable from the wall socket whenever connecting or
WARNING
 Make sure the wall socket power supply satisfies the rated voltage requirements
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disconnecting the power supply unit to the printer.
Failure to do so may result in damage to the power supply unit or the printer.
of the power supply unit. Never insert the power supply cable plug into a socket
that does not meet the rated voltage requirements of the power supply unit.
Doing so may result in damage to both the power supply and the printer.