Features 1、Excellent ABS Plastic Material: This development board basic learning kit is made of excellent ABS plastic material, which is strong and abrasion resistant, not easy to be damaged, long service life, stable and reliable, suitable for long term use. 2、Easy To Use: With a comprehensive set of development tools and resources, our development board starter kit simplifies the process of prototyping, testing, and deploying projects, allowing users to quickly bring their ideas to life. 3、Compact And Portable Design: Compact in size and light in weight, our development board is highly portable and can be easily integrated into various projects and applications, making it a convenient solution for developers and hobbyists alike. 4、Multifunctional: This development board kit contains a variety of sensor modules for a wide range of IoT experiments and projects, and can help users get started and master their skills quickly. 5、Wide Application: This mainboard kit has a wide range of applications, supports for Scratch programming, easy to learn, suitable for users of all ages, and is suitable for development boards, which is convenient for beginners to learn and creators to use. Specification Item Type: Development Board Material: ABS Plastic 9V Battery Box with Supporting Batteries Shipped: Battery Type: 1604D 6F22 9V Stacked Battery x1 (Included) Battery Model: 1604D 6F22 Stacked Battery Battery Capacity: 300mAh Remote Control with Built In Battery Shipping: Battery Type: 3V CR1220 Button Battery x1 (Included) Battery Model: CR1220 Button Battery Battery Capacity: 40mAh The 4 AA battery box is shipped without batteries: Battery Type: 1.5V AA Battery x 4(not included) Package List 3 x CD 10 x Module (Soil x 1, Passive Buzzer x 1, Collision Sensor x 1, Lighting x 1, Active Buzzer x 1, Laser Head x 1, Level Sensor x 1, Rocker x 1, Infrared Receiver x 1, Human Infrared Sensor x 1) 2 x LED Module (RGB Full Color x 1, 10MM x 1) 11 x Sensor Module (Temperature x 1, Light x 1, Tilt Switch x 1, Flame x 1, Touch x 1, Line Finding x 1, Infrared Transmit x 1, Thermistor x 1, Sound x 1, Vibration x 1, Temperature and Humidity x 1) 1 x Hall Sensor 1 x Water Level Module 100 x Resistor (10Rx10, 100Rx10, 220Rx10, 330Rx10, 1Kx10, 2Kx10, 4.7Kx10, 10Kx10, 100Kx10, 1Mx10) 1 x LED 1602 Blue Screen 1 x Servo 1 x Remote Control 1 x for R3 Expansion Board with Breadboard 1 x Water Pump 1 x 50CM Water Pipe 1 x Main Board 1 x Pin 1 x Motor Driver Board 1 x Ultrasonic Distance Measuring Module 1 x 8 x 8 Dot Matrix 2 x Digital Pipe (1 Digit 8 Word x 1, 4 Digit 8 Word x 1) 1 x 74HC595 1 x 9V Battery Box 1 x 9V Battery 1 x 5V Relay Module 1 x WiFi Wireless Module 1 x 4 x 4 Membrane Keypad 1 x DC Motor with Points 1 x Motor Fan Blade 1 x 4 Cells AA Battery Box 1 x 5V Stepping Motor 1 x USB Cable 1 x Water Pump Power Cord 26 x Female to Female Jump Wire (10CMx10, 20CMx16) 20 x Male to Male Jump Wire (10CMx10, 20CMx10) 20 x Male to Female Jump Wire (10CMx10, 20CMx10) 1 x Large Breadboard 1 x Color Ring Card 1 x 10 Compartment Small Box 1 x Package Box 1 x 74HC164N 1 x 74HC138N 20 x LED (Colorful x 5, Yellow x 5, Red x 5, Green x 5) 1 x 32.768M Crystal 1 x Nut 1 x 10K Adjustable Potentiometer 1 x DS1302 Clock Chip 4 x Key Switch 4 x Key Cap (Yellow, Red, Gree