Now, it is time to add a more fancy interactive way to your project. This DFRobot touch kit comes with three types of touch sensors. An iPod-style wheel touch, a keypad touch that supports backlit, and a grid touchpad which can recognize something unique. This kit utilizes the not very \”latest\” capacitive touch technology which makes the sensing very sensitive. The kit is designed to be compatible with Arduino. Specifications Operation Voltage: 5V Sensor Type: Capacitive Touch Chip: MPR121 Resources Wiki Doc Schematics Touch Kit Library MPR121 Datasheet Layout and dimensions Package Contents 1x Control Unit 1x Wheel Pad 1x Keypad Grid Pad x1 Cables x1