Vernier Software and Technology
Vernier Software & Technology

Go Direct® EKG Sensor

Product image for Go Direct® EKG SensorProduct image for Go Direct® EKG Sensor
Product image for Go Direct® EKG SensorProduct image for Go Direct® EKG Sensor
Product image for Go Direct® EKG SensorProduct image for Go Direct® EKG Sensor

The Go Direct EKG Sensor records electrical signals produced during heart or muscle contractions. It connects via Bluetooth® wireless technology or via USB to your device.


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 two 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.

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 our free Graphical Analysis 4 app or LabQuest 2 App. 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.

Wired or Wireless—The Flexibility to Choose

Our Go Direct sensors connect directly to your mobile device, Chromebook, or computer using our free Graphical Analysis 4 app—no additional equipment or software purchases are necessary. Go Direct sensors can be used wired via USB or wirelessly via Bluetooth® wireless technology, allowing you to choose the solution best for your classroom or laboratory.

Sample Data



  • Range: ±200 mV
  • Resolution: 24 µV
  • Maximum sampling rate: 400 samples/s
  • 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 s
    • Advance interval: 1 s
  • Connections
    • Wireless: Bluetooth
    • Wired: USB

Experiments and Lab Ideas

Compatibility Requirements

What’s Included

  • Go Direct EKG Sensor
  • A package of 100 disposable electrodes
  • Micro USB Cable

Ordering Information

All prices are for U.S. educators.

NameOrder CodePriceQuantity
Go Direct® EKG SensorGDX-EKGContact Us
Optional Accessories
Go Direct® Charge StationGDX-CRGContact Us


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Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications. Product usage disclaimer »

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