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Aim Sleep apnoea (SA) is an under-diagnosed condition, which can lead to multimorbidity and societal costs. The current diagnostic devices are expensive, complicated for patients to use and complex to analyse. We conducted an exploratory study of a novel, low-cost, simple-to-use SA screening device to compare its capability to identify apnoea (A) and hypopnea with a current home sleep apnoea test (HSAT) (NOX T3).Method 40 Participants were recruited from a SA clinic from a UK NHS hospital. They were trained in the use of the HSAT, which they were given to use concurrently with ApneScan (AS) overnight at home.Results An expert scorer blinded to the HSAT output, manually scored the respiratory signal from AS for both A and indicative hypopneas (IH) (not validated against a drop in%spO2) to deliver a total Indicative AHI. This was then compared to the AHI delivered from the HSAT and results were manually validated by an expert. There was strong correlation between AHI score for the two devices (0.955) and excellent agreement for the proportion of severity of sleep apnoea categories (93%).Abstract S75 Figure 1Plot of AHI values for both devices to check the agreement between measurements (with test of significance result – Parametric method – paired T test)Conclusions The results of this exploratory study indicate that, with further refinement of the automated analysis of the respiratory signal, would help the diagnostic throughput in sleep clinics and reduce costs. Due to device design it could also assess patient tolerance to therapy.