Vitalograph lung monitor is a simple to use respiratory monitor that measures FEV1, FEV6, FEF25-75 and FEV1/FEV6. This device can be paired with the mobile phone, PDA, PC or Home Hub for Bluetooth® transmission of test/session data and device ID, to be transmitted on to either the sponsor or web server. This device can be used for respiratory monitoring in clinical trials, at home, at work, in primary or in secondary care.