<b>Introduction:</b> The recognition and characterization of respiratory events is crucial when interpreting sleep studies. The aim of this study was to validate the PneaVoX sensor, which integrates the recording of respiratory effort (suprasternal pressure, SSP), respiratory flow, and snoring, for the classification of sleep apneas in children. <b>Materials and methods:</b> Sleep recordings of 10 children (age 6 months–16 years) with sleep-disordered breathing were analyzed. Scoring of apneas according to the American Academy of Sleep Medicine (AASM) guidelines using nasal pressure, oronasal thermal sensor and respiratory efforts by means of respiratory inductance plethysmography (RIP), was compared to a scoring using the PneaVoX sensor and nasal pressure, without the oronasal thermal sensor nor RIP, during a dual blind study. <b>Results:</b> The percentage of sleep time recording without artifacts was 97%, 97%, 87%, 65%, and 98% for the respiratory flow and SSP from the PneaVoX sensor, the oronasal thermal sensor, the nasal pressure, and RIP, respectively. As compared to the AASM scoring with RIP, sensitivity and specificity of the SSP for the detection of central apneas were 79% and 98% for the first reader, and 67% and 100% for the second reader, respectively. Sensitivity and specificity for the detection of obstructive apneas were 98% and 79%, and 100% and 67%, respectively. A significant number of apneas scored as central by RIP were scored as obstructive by the SSP. <b>Conclusions:</b> The PneaVoX sensor has a high degree of scorability in children and is generally well tolerated in children. The PneaVoX sensor is a useful adjunct for characterizing apneas.