Feature:1. The basic starter kit contains complete components, which can meet the various needs of beginners2. This is an upgraded version of the basic starter kit, easy to operate and use3. Made of excellent material, realize more functions and experiments4. Professional design and reasonable structure, easy to replace and install5. The interface has good contact performance, ensure stable working and operatingSpecification:Item Type: Basic Starter KitMaterial: PlasticModel: For R3Battery: 1 x 6F22 9V battery(not included)Remote Control: 1 x CR2025 button battery(not included).Package List:1 x Development Board1 x USB Cable1 x Prototype Expansion Board1 x Mini Breadboard1 x 5V Stepper Motor1 x 2003 Stepper Motor Driver Board10 x Red LED10 x Green LED10 x Blue LED2 x Vibration Sensors1 x Flame Sensor1 x LM35 Temperature Sensor1 x Infrared Receiver3 x Photoresistor4 x Keycaps4 x Key Switches1 x Adjustable Potentiometer1 x Passive Buzzer(piezoelectric buzzer)1 x Active Buzzer (sound generator)1 x Jumper Cap1 x Large Bread Board1 x Remote Control1 x 1602 Screen1 x 9G Server1 x Component Box1 x 10P Jump Wire34 x Breadboard Line1 x 220ohm Resistor1 x 8 x 8 Dot Matrices1 x 1-Digit 8-Segment Tube1 x 4-Digit 8-Segment Tube1 x IC 74HC5951 x Battery Holder1 x 1K Resistor Plug1 x 10K Resistor Plug1 x 9V Battery1 x 2.54mm 40pin Header3 x Tool Box Partition Board