The enuresis alarm methodology originated from French and German physicians in the first decade of the 20th century. Meinhard von Pfaundler, a German pediatrician made the discovery accidentally, with the original intention to create an alarm device that would notify nursing staff when a child had bed wetting and needed to be changed, showing the device to have a significant therapeutic advantages after a certain time of use.[1] Despite early success, the treatment was not developed until the 1930s by two independent groups of psychologists: Orval Mowrer and Willie Mae Mowrer (1938) and John Morgan and Frances Witmer (1939).[1] Mowrer used a modified Pfaundler alarm device with 30 children (ages 3–13 years) showing empirical success of the bell and pad method as a treatment for nocturnal enuresis, with the maximum time required to accomplish the treatment not exceeding two months.[2]