Coin counter meters are available in many different voltages. Here are the DC voltage ones:
4.5 volt, 6 volt, 10 volt, 12 volt, 24 volt, 48 volt.
Here are the AC voltage ones:
12 volt, 24 volt, 48 volt, 120 volt
Remember that ALL coin counting meters use a PULSE to operate. To apply a constant voltage to them will burn them up!