http://www.contecmedsystems.com/spirometer/ Handheld Bluetooth Spirometer SP80B Introduction SP80B BLUETOOTH SPIROMETER is a hand-held equipment used for checking lung conditions. It adopts the infrared mode to measure relative items, such as FVC, FEV1, FEV1/FVC, PEF, etc., and this spirometer applicable for hospital, clinic for routine test. Features Parameters including FVC, FEV1, FEV1/FVC and PEF can be measured. And the test condition can be shown by the ratio of the measured value and the predicted value. 1.User information setup. 2.Case review function. 3.Mass storage of cases, stores up to 9999 cases. 4.Expiratory time indication function. 5.Data transmission by Bluetooth and USB. 6.Calibration function ensures test accuracy. 7.Power indicator and test indicator light. Performance Volume range0 ~ 10 L Flow rate range0 L/s ~ 16 L/s Volume accuracy卤3 锛?or 卤0.05 L (whichever is greater) Flow rate accuracy卤5 锛?or 卤0.2 L/s (whichever is greater) Working current60 mA Power supplyrechargeable lithium battery Type of protection against electric shockinternally powered equipment Degree of protection against electric shocktype BF applied part Degree of protection against ingress of liquidIP22 Accessories 1.A User Manual 2.A USB data line 3.A mouthpiece 4.A PC software 5.A power adapter (optional) 6.A nose clip (optional) Physical characteristic Dimension: 160 mm*65 mm*45 mm Weight: 190gSpirometer quotation website:http://www.contecmedsystems.com/spirometer/