Alarm and/or Vibrate settings: Loudest possible alarm while still safe (OSHA). Strong Vibrating Alarm can be used with or without audible alarms. The alarm wakens and motivates your child to go to the bathroom to finish urinating. Magnetic tether attachment: Wearable unit is small, lightweight and easy-to-use. Magnetic clip is attached to pajama top. 5 Variable Alarms: 5 Loud Variable Alarms so your child does not get used to a particular alarm sound. Doctor-designed: Designed by a Pediatric Urologist, Wet-Stop3 enuresis alarm is clinically proven to stop bedwetting in boys and girls. Knowledgeable customer service and support is available Mon-Fri 8am-4:30pm EST at 1-865-584-6700. Easy to use sensor should be attached to the OUTSIDE of the underwear. Sensor should NOT touch skin, as it is sensitive to sweat. 1-Year Replacement warranty: If alarm or sensor fails within a year of purchase due to a manufacturer’s defect, it may be returned to PottyMD for a replacement. Mom approved: Parents love that Wet-Stop3 cures bedwetting without medication. Device is FDA registered, ISO 13485 certified, CE safety certified. 2-Step Shut Down: The alarm is shut down by pressing the side button while drying the sensor. Alarm system: comes complete with alarm, sensor cord, Bedwetting book on cd or download, reward chart and stickers.