1、EASY TO GET STARTED: This is an for R3 development board kit for beginners, the official version, facilitate a quick start, which is an ideal educational tool 2、EXERCISE PROGRAMMING: The development board starter kit is compatible with for R3, and can freely build circuit experiments to improve programming skills 3、PACKAGE INCLUDE: A variety of sensors and modules are included in the development board beginner kit, which can meet various experimental needs and has great expansion potential 4、STABLE MATERIAL: The software engineer development board kit is made of excellent ABS plastic material with high stability and durability, suitable for long term use 5、FOR SOFTWARE ENGINEER: Development board basic learning kit contain a comprehensive range of accessories and tools that allow users to immediately start creating a variety of electronic projects Item Type: Development Board Starter Kit Material: ABS plastic Remote Controller Battery: Battery Type: 1 x 3V CR1220 button battery Battery Capacity: 40mAh Battery Connecting Wire Battery(not included): Battery Type: 1 x 9V 6F22 type 1 x Development Board Expansion Board 1 x Small Breadboard 1 x Mainboard 1 x Membrane Keypad 1 x 1602 LCD Display 1 x Power Supply Module 1 x Ultrasonic Sensor 1 x Joystick 1 x Temperature Humidity Sensor 1 x Infrared Receiving Sensor 1 x Sound Sensor 1 x Relay 1 x Remote Control 1 x Servo Motor 3 x Servo Motor Plastic Arm 3 x Servo Motor Screws 5 x Yellow LED 5 x Green LED 5 x Blue LED 5 x Red LED 5 x White LED 1 x RGB Full Color 1 x SN74HC595N 1 x L293D 1 x Passive Buzzer 1 x Active Buzzer5 x Key 1 x 4 Digit Digital Tube 1 x 1 Digit Digital Tube 1 x Ball Switch 2 x Triode 2 x Diode 2 x Photoresistor 1 x Flame Sensor 1 x Water Level Sensor 2 x Potentiometer 1 x Motor 1 x Fan Blade 10 x 100k Resistance 10 x 10Ω Resistance 10 x 10k Resistance 10 x 5k Resistance 10 x 2k Resistance 10 x 1k Resistance 10 x 1m Resistance 10 x 330Ω Resistance 10 x 100Ω Resistance 10 x 220Ω Resistance 1 x Stepper Motor 1 x Stepper Motor Drive Board 1 x Battery Cable 65 x Bread Line 20 x Jump Wire 1 x USB Cable 1 x Breadboard 1 x Plastic Box