Welch Allyn CP 150 Resting Electrocardiograph W/ optional SpirometryThe Welch Allyn CP 150 Resting Electrocardiograph (ECG) with optional spirometry combines the best traditional box ECG features like full size printouts and clinical decision with a simple touchscreen interface, fast one button operation, and flexible connectivity options to help you keep your staff productive and your tests accurate. And with the optional spirometry module, the CP 150 even lets you perform two reimbursable tests with just one device.