Feature: 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 Specification: 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. Package List: 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 Key1 x 4 Digit Digital Tube1 x 1 Digit Digital Tube1 x Ball Switch2 x Triode2 x Diode2 x Photoresistor1 x Flame Sensor1 x Water Level Sensor2 x Potentiometer1 x Motor1 x Fan Blade10 x 100k Resistance10 x 10Ω Resistance10 x 10k Resistance10 x 5k Resistance10 x 2k Resistance10 x 1k Resistance10 x 1m Resistance10 x 330Ω Resistance10 x 100Ω Resistance10 x 220Ω Resistance1 x Stepper Motor1 x Stepper Motor Drive Board1 x Battery Cable65 x Bread Line20 x Jump Wire1 x USB Cable1 x Breadboard1 x Plastic Box