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 tool2. EXERCISE PROGRAMMING: The development board starter kit is compatible with for R3, and can freely build circuit experiments to improve programming skills3. 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 potential4. STABLE MATERIAL: The software engineer development board kit is made of excellent ABS plastic material with high stability and durability, suitable for long term use5. 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 projectsSpecification:Item Type: Development Board Starter KitMaterial: ABS plasticRemote Controller Battery: Battery Type: 1 x 3V CR1220 button batteryBattery Capacity: 40mAhBattery Connecting Wire Battery(not included):Battery Type: 1 x 9V 6F22 type.Package List:1 x Development Board Expansion Board1 x Small Breadboard1 x Mainboard1 x Membrane Keypad1 x 1602 LCD Display1 x Power Supply Module1 x Ultrasonic Sensor1 x Joystick1 x Temperature Humidity Sensor1 x Infrared Receiving Sensor1 x Sound Sensor1 x Relay1 x Remote Control1 x Servo Motor3 x Servo Motor Plastic Arm3 x Servo Motor Screws5 x Yellow LED5 x Green LED5 x Blue LED5 x Red LED5 x White LED1 x RGB Full Color1 x SN74HC595N1 x L293D1 x Passive Buzzer1 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 10 Resistance10 x 10k Resistance10 x 5k Resistance10 x 2k Resistance10 x 1k Resistance10 x 1m Resistance10 x 330 Resistance10 x 100 Resistance10 x 220 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