The sensor on Grove - Gesture is PAJ7620U2 that integrates gesture recognition function with general I2C interface into a single chip. It can recognize 9 gestures including move up, move down, move left, move right, etc with a simple swipe of your hand. Following is a video which using Gesture sensor with matrix to display the direction of hand. We can utilize the gesture to adjust the sound volume, control a robot. Or we can make a remote-control unit, which is able to operate many devices at the same time via a gesture sensor. “Always Believe That Something Wonderful Is About To Happen.” Features: 9 gesture recognition Built-in proximity detection Various main boards support : Arduino UNO/Seeeduino/Arduino Mega2560 Part list: 1*PCBA-Grove - Gesture; 1*26AWG Grove Cable;SA206120099A. Specification: Interface:IIC 13gesture recognition Operating Power:5V Dimensions:20*20mm Sensor: PAJ7620U2 Detecting range: 5 – 15cm Ambient light immunity: < 100k Lux Gesture speed mode: Normal and Gaming Documents: Please visit our wiki page for more info about this product.