The second generation Nytone enuresis alarm is attached to the upper arm using a comfortable adjustable strap that holds the unit gently in place. The bed wetting alarm sounds, vibrates, and emits a small flashing blue light when activated. The moisture sensor is threaded under the child's shirt and is secured to tight fitting cotton underwear using the clip-on jaw sensor. The sensor is attached to the outside of the child's underwear where they would first wet. The package includes instructions (English and Spanish) and batteries.

This alarm has the unique feature of attaching to the upper arm instead of the shirt. It is much like a sport strap that holds an MP3 player on the upper arm. Your child must wear a T-Shirt/pajama top so that the sensor cord can be threaded through the sleeve hole and down the torso to the underwear. This second generation Nytone alarm is much lighter than the original Nytone bed wetting alarm, and also features an improved locking sensor to help stop bedwetting. The new Nytone also improves over the first generation in that it now has vibration to help awaken your child.