Features 1、RELIABLE COMPATIBILITY: Electronic component kit for development boards, providing a stable and reliable hardware platform for users of all skill levels. 2、RICH ACCESSORIES: Electronics starter kit contains rich modules and sensors such as LEDs, buzzers and temperature and humidity sensors, allowing you to get started quickly. 3、MULTI APPLICATION: Multipurpose design, can be used in Internet of Things, robotics, electronic arts and science experiments, etc, to meet different user needs. 4、BOXED DESIGN: Packed in an integrated box, all the electronic components are packed inside the box, reducing confusion and loss, easy to carry and store. 5、STABLE AND DURABLE: These electronic components are made of premium materials and fine craftsmanship to ensure stable operation and durability for a long time. Specification Item Type: Electronic Component Kit Material: Plastic Package List 5 x White LED 5 x Yellow LED 5 x Blue LED 5 x Green LED 5 x Red LED 1 x LED RGB 2 x Photoresistor 1 x Thermistor 2 x Diode Rectifier (1N4007) 2 x NPN Transistor (PN2222) 1 x Tilt Switch 5 x Buttons (Small) 1 x 1 Digit 7 Segment Display 1 x 4 Digit 7 Segment Display 1 x Sound Sensor Module 1 x LCD1602 Module (With Pin Header) 1 x IC L293D 1 x IC 74HC595 1 x Buzzer Activation 1 x Passive Buzzer 1 x Temperature and Humidity Module 1 x Potentiometer 1 x Joystick Module 1 x Switch Module Membrane 1 x 5V Relay 1 x Infrared Receiver Module 1 x R3 Controller Board 1 x 830 Breadboard 1 x Servo Motor (SG90) 1 x Stepping Motor 1 x ULN2003 Stepper Motor Control Card 1 x Expansion Prototype 1 x Power Supply Module 1 x Ultrasound Sensor 1 x Servo Motor 3V (Welding Wire) 1 x Fan 1 x Remote 1 x 65 Wire Bridge 1 x Water Level Sensor 1 x USB Cable 1 x 9 V DC Battery Connector 10 x UDS Resistor (10R) 10 x UDS Resistor (100R) 10 x UDS Resistor (220R) 10 x UDS Resistor (330R) 10 x Resistor (1 K) 10 x Resistor (2 K) 10 x Resistor (5K1) 10 x Resistor (10 K) 10 x Resistors (100 K) 10 x Resistor (1M) 10 x Male Female Cables 1 x Resistor Identification Card 1 x CD 3 x Plastic Board 1 x Storage Box