Marty uses the Noise Sensor to trigger a response when a change or level of noise is reached. You could make your Marty clap activated. For example, in combination with our LED add-ons, you could turn on all the LEDs with a double clap! Do you have a noisy class? Marty could help you settle your students with a celebratory dance routine if the noise drops to an acceptable level! The Noise Sensor can be attached to either of Marty’s feet.