Features: This IO Expansion Sensor Shield is specifically designed for NANO It solves the problem of disordered wiring for NANO when connecting multiple sensors, and becomes the practical tool for you to develop works Draw out all of the digital I/O mouth and analog I/o mouth, every IO mouth has the positive and negative power supply interface standard I2C interface on the main board, convenient and connection of the I2C device The DC power supply interface is added to ensure the stable operation of the equipment when it is loaded with high-current equipment. Specifications: Type: Expansion Shield Color: red Weight: 22g Package includes: 1 x Expansion Sensor Shield 1、This IO Expansion Sensor Shield is specifically designed for NANO 2、It solves the problem of disordered wiring for NANO when connecting multiple sensors, and becomes the practical tool for you to develop works 3、Draw out all of the digital I/O mouth and analog I/o mouth, every IO mouth has the positive and negative power supply interface standard 4、I2C interface on the main board, convenient and connection of the I2C device 5、The DC power supply interface is added to ensure the stable operation of the equipment when it is loaded with high-current equipment.