1、Wide Utility: Has wide compatibility with for MEGA 2560, for NANO and for Raspberry pi, practical and reliable. 2、Easy Control: Standard interface can be directly controlled by micro controller, supports 8051, AVR, PIC, etc. 3、Simple Using: The upgrade tutorial inside the CD is only for R3, for MEGA2560 R3, for NANO, very simple to use. 4、37Pcs in All: Including 37pcs different sensor module in all, such as flash module, 18B20 temp module and so on. 5、100Pcs Resistor: There are also 10 values of resistors, and each has 10pcs, meeting your various working needs. 1 x Teaching CD1 x Flash Module1 x 18B20 Temp Module1 x Avoidance Module1 x Big Sound Module1 x Flame Module1 x LCD 1602 Module1 x Linear Hall Module1 x Photo Interrupter Module1 x RGB LED Module1 x Small Sound Module1 x SMD RGB Module1 x Tracking Module1 x Two Color Module1 x Button Module1 x Button Switch Module1 x Joystick Module1 x Ultrasonic Sensor Module1 x Reed Switch Module1 x Power Supply Module1 x TAP Module1 x Photo Resistor Module1 x IR Emission Module1 x IR Receiver Module1 x Laser Emission Module1 x Relay Module1 x Metal Touch Module1 x Tilt Switch Module1 x Human Body Infrared Sensor Module1 x Clock Module (Without CR2025 Battery)1 x Digital Temperature Module1 x Water Level Sensor Module1 x Gyroscope 6DOF Module (With 2Pcs Pin Header)1 x Temperature and Humidity Sensor Module1 x Rotary Encoder Module1 x Buzzer Module1 x Vibration Module10 x Resistor Set (Each Has 10cs)1 x Storage Box Item Type: Sensor ModuleMaterial: PCBClock Module Battery: CR2025 (Without)Specification:1 x Flash Module1 x 18B20 Temp Module1 x Avoidance Module1 x Big Sound Module1 x Flame Module1 x LCD 1602 Module1 x Linear Hall Module1 x Photo Interrupter Module1 x RGB LED Module1 x Small Sound Module1 x SMD RGB Module1 x Tracking Module1 x Two Color Module1 x Button Module1 x Button Switch Module1 x Joystick Module1 x Ultrasonic Sensor Module1 x Reed Switch Module1 x Power Supply Module1 x TAP Module1 x Photo Resistor Module1 x IR Emission Module1 x IR Receiver Module1 x Laser Emission Module1 x Relay Module1 x Metal Touch Module1 x Tilt Switch Module1 x Human Body Infrared Sensor Module1 x Clock Module (Without Battery, CR2025 3.0V Battery)1 x Digital Temperature Module1 x Water Level Sensor Module1 x Gyroscope 6DOF Module1 x Temperature and Humidity Sensor Module1 x Rotary Encoder Module1 x Buzzer Module1 x Vibration Module1 x Teaching CD10 Types of Resistor (10 for Each): 10Ω, 100Ω, 220Ω, 330Ω, 1KΩ, 2kΩ, 5.1KΩ, 10KΩ, 100kΩ, 1MΩ.