The Clip Sensor for the Dry-Me Alarm has the advantage of being able to clip and anchor to the outside of any close fitting underwear for boys or girls. One sensor is included with each new Dry-Me Alarm, but you can purchase additional sensors here if you have damaged or misplaced the original - or just want to have a spare on hand at your home.
Dry-Me Alarms have a convenient modular plug (just like your telephone connector) to allow you to change sensors.