How do I change the temperature on my BRAYER BR3339 Hair Straightener?

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Adjusting the temperature on your BRAYER BR3339 Hair Straightener is simple. First, plug the straightener into a power outlet; the display will initially show "OFF." To begin, press and hold the power button to turn the straightener on. The display will illuminate, showing the default temperature of 210°C, which will flash. To modify the temperature, use the "«-/+»" buttons to increase or decrease the heat. The recommended temperature settings based on hair type are: for damaged, colored, bleached, or fine hair, use 150°C to 180°C; for normal hair, use 180°C to 210°C; and for professional styling, use 210°C to 230°C. Once you have set your desired temperature, wait for the heating plates to reach that temperature; the display symbols will glow steadily when heated. You can also lock the temperature by pressing and holding the "-" button until the lock symbol appears, preventing accidental adjustments. To use, section your hair and glide the straightener through each section, avoiding holding it in one place for more than two seconds. Allow your hair to cool before styling further. After use, press and hold the power button to switch off the straightener, unplug it, and allow it to cool completely before storing it. Always refer to your BRAYER BR3339's instruction manual for safety and operational guidelines.