The Advancer Technologies EMG Muscle Sensor V3.0 With Cable And Electrodes is a device designed to measure the electrical activity of a muscle and provide an output signal in the range of 0 to Vs volts, depending on the level of muscle activity. With a minimum power supply voltage of +-3.5V, this muscle sensor filters, rectifies, and amplifies the electrical signals of a muscle, producing an analog output signal that can be easily read by a microcontroller. The device comes with a 52mm electrode pad diameter, 2-foot cable length, and weighs 30g. It also features an improved adjustable gain, onboard port for new cables, and reduced voltage requirements. This muscle sensor can be used for creating muscle-controlled interfaces for various projects.