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This sensor measures electrical activity in the heart and electrical signals produced during muscle contractions. This sensor provides 2 separate outputs: one optimized for standard 3-lead EKG tracings and one optimized for surface EMG recordings. EMG recordings can also be rectified automatically by the sensor. The rechargeable battery offers long battery life. Go Direct® sensors can be used wired via USB or wirelessly via Bluetooth® technology.

Product Details
The Go Direct® EKG Sensor measures electrical activity in the heart and electrical signals produced during muscle contractions. The wireless options minimize the concern of cables getting caught and tangled during experiments. This sensor provides 2 separate outputs: one optimized for standard 3-lead EKG tracings and one optimized for surface EMG recordings. EMG recordings can also be rectified automatically by the sensor.

The Go Direct® EKG Sensor can be used in a variety of experiments:

• Compare and measure students' electrocardiogram (EKG/ECG) waveforms
• Determine heart rate by examining the number of QRS waveforms in a series of electrocardiograms (EKG/ECGs)
• Study contractions of muscles (EMG) in the arm, leg, or jaw
• Correlate measurements of grip strength and electrical activity with muscle fatigue

Product Features
Rechargeable Battery—Ready When You Are
The robust rechargeable battery offers long battery life and provides always-ready operation when using the sensor wirelessly. Monitor battery life directly from the award-winning Vernier Graphical Analysis® app, as well as the LabQuest® 3 device. Should the battery run low, simply connect the sensor to the charging cable, and keep on collecting—no interruptions or inconvenience to you or your students.

Wireless or Wired—The Flexibility to Choose
The Go Direct® sensors connect directly to your mobile device, Chromebook® computer, desktop computer, or tablet using the Vernier Graphical Analysis® app—no additional equipment or software purchases are necessary. The sensor also can be used wired via USB or wirelessly via Bluetooth® technology, allowing you to choose the best solution for your classroom or laboratory.

Specifications

• Range: ±200 mV
• Resolution: 0.024 µV
• Maximum sampling rate: 400 samples/sec
• EKG channel settings: High-pass, 0.300 Hz; low-pass, 22.5 Hz (–3 dB cutoff with –80 dB attenuation above 50 Hz)
• EMG channel settings: High-pass, 2 Hz; low-pass, 29 Hz (–3 dB cutoff with –80 dB attenuation above 50 Hz)
• Heart rate calculation: Sample windows, 6 sec; advance interval, 1 sec
• Connection: Wireless, Bluetooth®; wired, USB
• Software: Requires Vernier Graphical Analysis® software (for iOS®, Android®, Chrome®, Windows®, and MacOS®), available on the Vernier® website
• Warranty: 5-year limited warranty on sensor (1 year on battery)

Note: Vernier® products are designed for educational use. They are not designed nor are they recommended for any industrial, medical, or commercial process, such as life support, patient diagnosis, control of a manufacturing process, or industrial testing of any kind.