Will this work in Brazil?

Hello there, yes it will work in Brazil without problem. :)

Will this work in poland? poland takes a type e connector.

Hello there, yes the included Europe plug cord will help in Poland. Hope this might help. :)

Is this a transformer or a converter? I have a 110 v sewing machine with a warning not to plug into 220 socket. So I need a transformer.

This electronic device (called a voltage converter) is not a transformer*; however, I think it will operate your sewing machine provided the sewing machine can be plugged into a standard 120 VAC receptacle and does not exceed 2300 Watts. A transformer will also work if you can find one and will be more robust. The sewing machine should work with either 50 Hz or 60 Hz. I purchased this converter for travel to UK (I live in the US) but only used to charge my phone. It should be capable of powering a 120V hairdryer up to 2300W. It is light and compact. *My old school definition of an electrical transformer is a simple heavy, bulky magnetic device with a iron core and two electrical windings, primary and a secondary, which converts AC Voltage up or down: 120 to 240 or in your case 240 to 120. On a mission to Zimbabwe in 1998 our team purchased a transformer 240 to 120 VAC to run a circular saw we brought with us.

Is there any safe protect settings?

Hello there, thanks for the question, our converter designed with overvoltage, overcurrent, over temperature, short circuit protection, surge protection and cooling fan to provide a stable and safe using condition.

Output Voltage	1.2E+2 Volts (AC)
Plug Type	Type C
Input Voltage	240 Volts
Item Dimensions	5.91 x 3.35 x 1.97 inches
Item Weight	0.01 Ounces
Color	Black

Voltage Converter US to Europe 220 to 110 Power Converter 2300W with w/ 4 USB 3 AC Outlets, Universal Travel Adapter for EU/UK/Asia/Italy/India/Australia/South Africa 220+ Countries

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