The snoring relief band only works if its sensor is in contact with your chest. In case, it is positioned on your back or too high or low on your chest, it may not vibrate or may vibrate too intensely.
Make sure that the sensor is completely inserted into the pouch and is correctly positioned. The activation button should point towards your chin. The display of the sensor should be visible through the window of the pouch. It should not be positioned upside down or reversed, because then the sensor will not vibrate properly and will result in low effectiveness.
Centre the pouch with the sensor in front of your torso, just below your chest. Close the strap tightly with the clip. The strap should fit snugly on your chest, but should also feel comfortable.
For the best results, wear the strap on bare skin. If you have applied any body lotion on your skin, make sure it is completely absorbed before putting on the band.