The vibrator is non-polarized. Power board specs: 120W, 40kHz. Made with high-quality materials for reliable performance. Vibrator specs: 40kHz. Voltage: 220V. Wiring instructions: 1. Do not power the circuit board without load or cleaning fluid. Connect vibration wiring correctly (polarity matters). 2. Solder the vibration power cord on the silver-layered side; the other side attaches under the cleaning basin. 3. Avoid high temperatures when soldering (max 280��C; recommended 250��C with a temperature-controlled iron). Technical details: Max current: 1.2-1.7A Frequency: 40kHz Voltage: AC 220V ��20% (50-60Hz) Input current: 0.5A Note: Minor variations in appearance or print may occur between batches but do not affect functionality. Color/material: As shown (PCB + plastic + metal). Package includes: 1 power module. Disclaimer: Slight color deviations may occur due to lighting or screen settings. Size tolerance: ��1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store