The alarm can be tested by slowly inserting the plug into the alarm box until a small resistance is felt. You'll know the alarm is working when it sounds off. Once fully inserted the unit is ready for use. The built-in control switch has a volume control with a high and low setting. Set the volume control by the switch on the back of the unit. Some additional features include:
- alerts the user, parents, nurses, or other attendants
- small electronic box is powered by a 9 volt battery
- placed underneth bedsheet
- volume control
Pad is made of Arlon polyrthene foam and Lectolite conductive vinyl sheets measuring 18½" x 24½". The Train-r® Wet Call is connected to the alarm box with a 66½" long conducting cord.