This is a 10 pack of Biomedical Sensor Pads, disposable electrodes that can be used to measure EEG, ECG and EMG levels.
MyoWare Muscle Sensor
This is the MyoWare Muscle Sensor, an Arduino-powered, all-in-one electromyography (EMG) sensor from Advancer Technologies.
SparkFun Particle Sensor Breakout - MAX30105
The SparkFun MAX30105 Particle Sensor is a flexible, powerful sensor enabling sensing of distance, heart rate, particle detection and even the blinking of an eye.
SparkFun Single Lead Heart Rate Monitor - AD8232
SparkFun Single Lead Heart Rate Monitor is a cost-effective board used to measure the electrical activity of the heart.