HiLetgo MEGA Sensor Shield V2.0 Sensor Expansion Board for Arduino UNO MEGA1280 MEGA2560 MEGA2560 R3 This MEGA Sensor Shield V2.0 dedicated sensor expansion board assembly market a variety of advantages in one of the expansion board design, PCB Immersion Gold processing technology. Board not only all digital and analog interface to the steering gear line order form extended out, but also ad hoc Bluetooth module communication interface, SD card module communication interface, APC220 wireless RF module communication interface, and RB URF v1.1 ultrasonic sensor interface, independent expansion a more easy and convenient. For beginners, do not have to worry about cumbersome and complex circuit connection, will simplify this circuit sensor expansion board in the true sense, it can often be easily connected with the sensor. A sensor requires only a general 3P sensor cable (regardless of digital cable and analog cable), complete the circuit connection, the preparation of the corresponding program downloaded to MEGA controller reads the sensor data, or receive wireless module back pass data through the arithmetic processing, the final easy to complete your own interactive works. Sensor Shield allows you to connect to various modules like sensors, servos, relays, buttons, potentiometers.