Color White Brand ElecFreaks Model E00401 Quantity 1 Piece Material FR4 English Manual / Spec No Other Features OCTOPUS Sound Sensor is a sensor module based on MIC sound sensing element. Sound Sensor is particularly sensitive to sound intensity and it can be used to detect ambient sound level but it can not identify the size of sound and the specific sound frequencies. It is available to make voice switches and other works. 3 pins electronic building block interface: input5V - GND S for detection pin Operating voltage DC 5.0V Adjustable sensitivity (shown in blue digital potentiometer adjustment) With signal LED (if the signal output the LED will be on) Output type: Digital switching output 0-1(If detect sound output 1 and the signal LED will be on ) Packing List 1 x Octopus Sound Sensor Brick 1 x Analog Sensor Cable(21cm)