Pairing method: Method 1: Press and hold the side knob for 5 seconds until you hear a beep and the screen starts flashing. Then press any button on the remote control. You will hear a beeping sound, indicating successful pairing. Method 2: Before plugging in, long press the ‘Stop’ and ‘Feminine Wash’ button simultaneously. You will hear a beeping sound after plugging in, indicating successful pairing.