ITEM NAME:Dedicated Expansion Development Board for Arduino MEGA V1.0 V2.0 Sensor Shield Product Description Description: DIY Parts Dedicated Expansion Development Board for Arduino MEGA Sensor Shield V1.0 V2.0 Bluetooth SD Module Description: For beginners, not for the cumbersome and complex circuit connection and get a headache, and this sensor expansion board truly simplify the circuit can easily be used to connect the sensor, a sensor requires only a general 3P sensor wire (regardless of digital cable and analog cable), complete the circuit connection, the preparation of the corresponding program to the MEGA Ard controller reads the sensor data, or receive wireless module return data, after arithmetic processing, and ultimately easy to complete your own interactive work. Feature: All the digital and analog interfaces servo extended line order form out. Ad hoc Bluetooth module communication interface, SD card module communication interface, APC220 radio frequency module communication interface, and RB URF v1 .1 ultrasonic sensor interface, independent of a more extended use convenient. Specification: Interface: Ultrasonic Interface: VCC D48 D49 GND Bluetooth Module Interface: 3V3 GND D0 D1 GND VCC SD Card Interface: D50 D52 D53 D51 GND VCC APC220 Wireless Module Interface: Empty D19 D18 Empty VCC GND Product Size: 100 X 53 X 13mm/3.94 X 2.09 X 0.51" Package Weight: 40g Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3mm measuring deviation due to manual measurement. Included: 1 X Development Board for Arduino.Ad hoc Bluetooth module communication interface, SD card module communication interface, APC220 radio frequency module communication interface, and RB URF v1. 1 ultrasonic sensor interface, independent of a more extended use convenient.