New Pasport EKG ECG Heart Beat Student Sensor PS-2111

You are bidding on a new Pasport EKG ECG Heart Beat Student Sensor PS-2111.  This unit measures both EKG and heart beat.  You are supposed to use it with self-adhesive disposable electrode patches (that are NOT included).  No messy gel required.  The following information was found on the manufacturer's website at: http://store.pasco.com/pascostore/showdetl.cfm?DID=9&Product_ID=50612&Detail=1

PASPORT EKG Sensor

No data is more interesting to a student than data about their own body. Our EKG sensor lets students see the electrical signals generated by their hearts. After students conduct mild exercise, watch the change in data occur. Our digital technology generates not only the EKG signal, but the heart rate as well. Electrically isolated input to ensure student safety.

• Standard three-electrode design.
• Easy-to-use, disposable stick-on electrodes. (NOT included)
• No messy gel required.

With each heart beat, the pacemaker of the heart (called the SA node) conducts electricity. The electrical current travels from the SA node in the right upper chamber of the heart down to the tow lower chambers, the ventricles, of the heart. The electrical activity always preceded each contraction. Electrodes placed throughout the body record the signal generated from the heart.

An EKG, also called electrocardiogram or ECG, is a reading of the electrical signal generated from the heart. The EKG shows whether the heart's rhythm and electrical conduction is normal.