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Start with the input rating, not the plug menu

For a cavitation machine voltage and plug check, collect three pieces of information: the rating label on the actual unit, its current instructions, and the electrical supply at the intended location. Compare those records before using the machine. A website option describes what was offered; the label identifies what arrived.

Look for INPUT. On equipment powered directly from the wall, read the machine’s mains input rating. If it has an external power supply, record that supply’s input and output as well as the device label. Do not treat an output voltage as the wall-supply requirement. Manufacturer documentation distinguishes these fields; the MEAN WELL manual cited here is a power-supply labeling example, not a beauty-machine instruction set. [7]

Record the complete label

• Manufacturer, model and serial identification: connect the label to the supplied manual and configuration.
• Input voltage and AC/DC designation: retain the range and symbols exactly; do not simplify an unclear marking to “universal.”
• Input frequency: record whether it lists 50 Hz, 60 Hz or both.
• Rated current or input power: keep the stated units. These are electrical-input information, not evidence of treatment effectiveness.
• Power-supply and cord identification: if supplied separately, record their part numbers and labels too.

A slash or a dash in a sales listing is not enough to distinguish separate voltage versions, automatic wide-range input or a selector arrangement. Ask which description applies to the delivered unit. Do not operate a voltage selector by trial and error.

US, EU, UK and AU labels are regional shorthand

The table describes common household supply arrangements. It is a reference for asking questions, not a machine-compatibility chart. Verify the actual country and intended outlet; “EU plug” is especially incomplete without a destination.

On a narrow screen, swipe inside this table to read the final column.

No particular machine’s US/EU/UK/AU availability or electrical configuration is established by this table. A region option can describe a cord choice, a different power-supply version or another configuration; obtain a model-specific answer.

An adapter, a transformer and a power supply do different jobs

A travel plug adapter changes the physical connection

It does not convert mains voltage or frequency. Its own load rating and earth provision also matter. Some adapters are suitable only for double-insulated equipment; a device that needs protective earth cannot be made compatible by using an unearthed connection. [1]

A voltage transformer is not a frequency converter

An ordinary transformer changes voltage while retaining the input frequency. Schneider Electric explicitly distinguishes transformer voltage and frequency compatibility. That engineering explanation does not identify a suitable transformer for your beauty machine. [8]

If the device’s documented input does not match the local supply, ask the manufacturer whether an external conversion arrangement is permitted for that exact configuration. Have a qualified electrical professional assess any proposed arrangement, including its ratings and protection. A generic wattage formula or “step-down” label is not a complete assessment.

An external power supply must also match the device

A supply with a broad mains-input range does not make every device connected to it compatible. Its output and the device’s documented requirements are separate checks. Request the manufacturer-authorized replacement part; a connector that fits is insufficient evidence. Do not open the console to identify or replace its internal supply.

Grounding is part of the configuration

Never remove a grounding pin or modify a connection to defeat protective earth. OSHA’s US workplace standard prohibits adapters that interrupt grounding continuity and requires appropriate grounding conductors for grounding-type equipment. This is a US workplace source, not a statement that the same legal wording applies worldwide. [9]

For specialized equipment, HSE recommends assessment by someone competent with that type of equipment, such as the manufacturer or an authorized service agent. An uncertain protection marking should be resolved through documentation and competent assessment. [10]

Ask the supplier about the configuration that was actually tested

A useful answer names the machine, power supply, cord and market together. “We ship worldwide” or “choose your plug” leaves the electrical question unanswered. Use this document request before connecting an unfamiliar unit:

1. Identify the unit. Request a readable photograph of its rating plate and the current exact-model instructions, with any version or serial applicability explained.
2. Name the destination. State the country, intended site and known supply details. Have the site supply checked professionally if uncertain; do not probe an outlet yourself.
3. Separate cord choice from voltage version. Ask whether the selected plug changes only the cord, or also the machine or external power supply. Request the actual rated input in writing.
4. Confirm the complete documented assembly. Ask which cord, power supply and accessories were included in the relevant electrical safety assessment, and which replacements or conversion arrangements are permitted.
5. Match supporting records. Ask for the applicable safety documentation identifying the model and configuration. A logo alone is not the configuration record you are requesting.
6. Resolve contradictions before connection. If the website, label, manual or supplier reply differs, retain the records and ask for a corrected, traceable explanation. Do not average conflicting ratings or test which claim is right.

For a salon, retain the configuration evidence in the equipment file and arrange acceptance and ongoing checks appropriate to the equipment and environment. HSE distinguishes simple visual checks from defects requiring testing, and does not prescribe an annual portable-appliance test for every item. Its advice concerns UK workplaces; local duties need local assessment. [11]

This is a practical documentation checklist, not a universal certification procedure or permission to energize the machine. No exact-model SaintQueen electrical specification or approved adapter arrangement has been established here.

Common mistakes that leave the check incomplete

• “The plug fits, so the machine is compatible.” Fit does not settle the input rating or protection requirements.
• “The cord says 250 V, so the machine takes 250 V.” A cord’s marking is not the device’s input label.
• “It says 40K or 80K, so I know the electrical frequency.” An ultrasound specification and a mains-input frequency are different fields. Read the Hz value beside INPUT.
• “The screen lights up, so the whole system is safe.” A working display is not an electrical inspection or test.
• “The same-looking machine’s manual will do.” Match the manufacturer, model and configuration, including any separate power supply.

Further questions

Does “110 V / 220 V” mean automatic dual voltage?

Not by itself. The wording could refer to different versions rather than one automatic input range. Ask for the delivered unit’s label and manual. Until they clarify the arrangement, the listing is incomplete.

Can I replace a detachable cord with one for my country?

Ask the manufacturer for the authorized cord specification or part. Detachability alone does not confirm the replacement’s ratings, protection or suitability for the complete unit. Do not cut or rewire the supplied lead as a workaround.

What if the rating plate is missing or unreadable?

Leave the unit disconnected and provide its identifying details to the manufacturer or authorized service provider. A listing screenshot or another owner’s photograph cannot establish the rating of your unit.

What if I already connected it to the wrong supply?

Stop using it and arrange safe disconnection and assessment. Report the unit identity, supply, connection arrangement and any symptoms. Do not reconnect it to see whether it survived; an apparently working screen does not resolve the mismatch.

The decision to make before connection

Confirm the actual unit’s input rating, the site supply and the documented connection configuration. If one of those records is missing or contradictory, resolve it with the manufacturer and a competent electrical professional before use.