Features 1、Fine Workmanship: Conforms to the standard expansion board design and adopts PCB gold immersion process as well. 2、Reliable Working: Specially designed for Sensor Shield V1.0, this expansion board ensures stable work performance. 3、Perfect Matching: Enables perfect match with IIC interface, 32 channel servo motor drive shield interface, etc. 4、Wide Application: You can connect the expansion board to various modules, such as sensor, relay, button and so on. 5、Easy to Install: Designed to have a compact size and a light weight as well, the installation is very convenient. Specification Item Type: Expansion Board Process: PCB gold immersion process. Compatibility: For all digital and analog interfaces of for Sensor Shield V2.0 pinout. For IIC interface. For 32 channel servo motor drive shield interface. For Bluetooth module communication interface. For memory card module communication interface. For APC220 wireless RF module communication interface. For RB URF ultrasonic sensor interface. For LCD serial and parallel interfaces. Package List 1 x Expansion Board