Electric Myographic Sensor, Muscle Electrical Analog Signal Sensor Biomedical Signal Acquisition Board EMG Development Kit
 
EMG sensors are used to measure muscle activity by detecting electromyography (EMG). A muscle activity detector specially designed for microcontrollers.
 
Measuring muscle activity by detecting its electric potential, referred to as electromyography (EMG), has traditionally been used for medical research. 
This sensor will measure the filtered and rectified electrical activity of a muscle; outputting 0-Vs Volts depending the amount of activity in the selected muscle, where Vs stands for the voltage of the power source. It's that easy: stick on a few electrodes, read the voltage out and flex some muscles!
This kit comes with everything you need to start sensing muscle activity with your Arduino or microcontroller of choice. Using muscle sensor kit you can make control using muscle activitiy.
 
Features
Small Form Factor
Specially Designed For Microcontrollers
Adjustable Gain
Power supply voltage: min. +-3.5V
 
Applications
Video games
Robots
Medical Devices
Wearable/Mobile Electronics
Powered Exoskeleton suits

Kit Includes
Muscle Sensor Board
60 cm Cable Leads
3 Disposable Surface Electrodes
 
Resources: 
1.  User Manual
2. Interfacing EMG Muscular Signal Sensor with Arduino