The Sound Sensor detects sound intensity. A stronger sound increases the strength of the signal the block sends out.Features The magnetic design at the back of Neuron blocks makes you can simply place your gadget on the magnetic surface such as whiteboard The redesigned magnetic Pogo Pin-connectors effectively prevent blocks from being connected incorrectly Support two ways to update firmware: wired and wireless Detects intensity of vibrations and shakes The modules are color-coded according to their functionality, to make it easy to distinguish between them and find the right block;Winner of 4 international design awards Specification Range: 0~100 (relative value) Accuracy: ±5% Sensitivity: -38±3dB Directivity: Omni-directional Operating Voltage: DC 5V Anti-drop Ability: 1.5m Operating Temperature: -10?~55? Operating Humidity: ?95% Weight: 7.5g