Spacer devices allow medicine from your child's inhaler to deposit in the lungs. Use of a spacer device decreases the risk of hoarseness and thrush with some asthma medications. A space device is included with the Asthma KidCare Go-Bag Ultimate. Spacer device sold is an FDA approved Monaghan Zstat antistatic valved holding chamber with flow signal whistle. The spacer device whistles when your child is inhaling too fast. This device encourages effective delivery of inhaled asthma medications.