Features: The MPR121 Board features 12capacitive touch sensors inputs and low power consumption, ideal for developing energy efficient intelligent devices requiring multiple touch functionality like interactive displays and customs keyboards. This I2C controlled module integrates automatic calibration for stable touch response, compact design, and configurable address jumpers to simplify integration into diverse electronic systems. Perfect for electronics engineers, developers, and makers creating touch sensitive prototypes, industrial control panels, or medical equipments requiring precise capacitive sensing. Enables responsive touch interfaces in intelligent home automation panels, wearable health monitors, and space constrained robotics projects where reliability multielectrode detection is critical. Support 12 capacitance sensing inputs, Multifunction 8 inputs can be used for LED driver and GPIO, Automatic configuration and calibration functions Specifications: Product name: Capacitive touch sensors controller Component: PCB Model: MPR121 Size:Approx.30.5x20.5mm/1.2x0.8in Supply voltages: DC1.71~3.6V Features:Low power design, I2C interfaces Operating temperature ranges: -40°C to +85°C Package Includes: 1pc MPR121 Touch Sensors Module 1pc Pin Header note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.