Sparkfun Electronics AD8232 Hook-Up Manual page 9

Now that the electronics are complete, let's look at sensor pad placement. It is recommended to
snap the sensor pads on the leads before application to the body. The closer to the heart the pads
are, the better the measurement. The cables are color coded to help identify proper placement.
Connection Diagram
Cable
Signal
Color
Black RA (Right Arm)
Blue
LA (Left Arm)
Red RL (Right Leg)
Page 9 of 15