Shimmer3 EMG Unit

Shimmer3 EMG Unit

Shimmer3 EMG Unit

Shimmer3 EMG Unit

The Shimmer3 EMG unit provides a configurable digital front-end, optimised for the measurement of physiological signals for EMG. 

Accessories included:

  • Biophysical 9" leads (x5)
  • 1x Waist Strap
  • 1x Wrist Strap

Note: EMG Electrodes and Alcohol Swabs not included.


The Shimmer3 EMG unit is a highly configurable sensor module which can be used in a variety of data capture scenarios.The unit includes:

• Software configurable right-leg drive for common-mode interference rejection
• Software configurable amplifier gain
• Software configurable data rate
• Respiration demodulation capability on-chip
• Lead-off detection capability on-chip
• Test signal on-chip for validation purposes
• EEPROM storage device enables expansion board detection and identification, as well as 2032 bytes of data storage available to user

 To learn more about how the Shimmer platform can be used to acquire EMG and IMU data, please see the demo video here.


The Shimmer3 EMG (Electromyogram) sensor measures and records the electrical activity associated with muscle contractions, assesses nerve conduction, muscle response in injured tissue, activation level, or can be used to analyze and measure the biomechanics of human or animal movement. The Shimmer3 EMG sensor is non-invasive (Surface) EMG and therefore is a representation of the activity of the whole muscle. It’s an efficient wireless solution for access to a host of muscle, gait, and posture data analysis.

• Two channels of EMG data
• EMG data can be measured simultaneously with 10DOF kinematic data

The EMG Unit also contains ECG functionality as standard. EMG and ECG data cannot be measured simultenously from a single unit.

The Shimmer3 ECG (Electrocardiogram) sensor records the pathway of electrical impulses through the heart muscle, and can be recorded on resting and ambulatory subjects, or during exercise to provide information on the heart’s response to physical exertion.

• Five-wire, four-lead ECG solution, measuring bipolar limb leads and user's choice of V1 - V6
• Digital interface includes test signal generation for validation purposes
• Respiration demodulation from ECG data and lead-off detection

Features & Benefits

Specific Features

  • Measures physiological data, EMG and ECG
  • Measures 2 channel EMG with a common reference electrode
  • 5 Wire, 4 lead ECG Solution
  • Software configurable for amplifier gain and data rate
  • Software configurable right-leg driver for common-mode interference rejection
  • EEPROM storage devise enables expansion board detection and identification

Leverages Shimmer3 Functionality

  • MSP430 microcontroller (24MHz, MSP430 CPU)
  • Bluetooth Radio – RN-42
  • Integrated 8GB micro SD card
  • 450mAh rechargeable Li-ion battery
  • Low profile & stylish wearable enclosure
  • Highly configurable to user/developer’s specific needs


EMG Unit Specification Overview:

  • Gain: software configurable (1, 2, 3, 4, 6, 8, 12)
  • Data rate: software configurable (125, 250, 500, 1000, 2000, 4000, 8000 SPS)
  • Input differential dynamic range : approx 800 mV (for gain = 6).
  • Bandwidth : 8.4 kHz
  • Ground: Wilson Type Driven Ground
  • Input Protection: ESD and RF/EMI filtering; Current limiting; inputs include defibrillation protection (survive only, not repeat).
  • Connections: Input Ch1N, Input Ch1P, Input Ch2N, Input Ch2P, Reference (Ref)
  • All Hospital-Grade 1mm Touchproof IEC/EN 60601-1 DIN42-802 jacks.
  • Ultra-lightweight (31 grams)
  • Compact Dimensions (65 x 32 x 12 mm)
  • EEPROM memory: 2048 bytes.



  • Muscle Activity, Gait, and Posture Disturbance measuring muscle activity, states, reaction time, and step phases
  • Biomechanics and Muscle Activity
  • Fatigue Analysis
  • Sports technique, performance and medicine
  • Neuro Rehabilitation
  • Tremor Analysis
  • Veterinary Science
  • Orthopedics
  • Ergonomics


  • Optimised Ambulatory ECG provides quick recovery from movement artefacts
  • Event Monitoring and Recording
  • Atrial Fibrillation
  • Premature Ventricular Contraction
  • Heart Function Monitoring
  • Abnormal Rhythm Detection and Alert
  • Download the Shimmer Wireless ECG Sensor Data Sheet