DAO2 serves LTOT patients remotely monitoring their vital parameters and adjusting oxygen delivery automatically. Thanks to the patented DAO2 system we aim to meliorate patient adherence, timely identification of disease exacerbation and the immediate access to all the informations by the key stakeholders involved in the treatment process. DAO2 can save up to 20% patient management costs, due to prevention of respiratory exacerbations. In addition, our new business model to offer LTOT as a service, instead of a commodity, can have a positive financial impacts on our customers (LTOT equipment manufacturers and LTOT providers) who struggle to keep their business afloat due to the low profitability.