Feature: 1. APPLICABLE MODEL: The development board basic starter kit is suitable for R3 main control board to facilitate quick learning and practice, help a lot 2. EXTENDABLE CONNECTION: The basic starter kit use an expansion board to connect multiple sensors to meet your different learning requirements 3. APPLICABLE SCENARIO: Development module basic starter kit can be widely used in the home, school or lab to improve programming and electronics skills 4. STABLE MATERIAL: The development board sensor learning kit is made of excellent ABS plastic material with good stability and long service life 5. USEFUL AND PRACTICAL: Development board beginner learning kit is very scalable and can expand other sensors or modules on demand, you can use with confidence Specification: Item Type: Development Board Material: ABS plastic Battery Box: Battery Type: 6 x 1.5V AA(not include) Remote Control Battery: Battery Type: 1 x 3V CR2025 button battery Battery Capacity: 170mAh. Package List: 1 x Development Board1 x Full Color RGB1 x 1302 Clock1 x Human Infrared Pyroelectric Sensor1 x Ultrasonic Sensor1 x Battery Box1 x 1602 LCD Screen1 x 8x8 Dot Matrix1 x 4 Digit Tube1 x 1 Digit Tube1 x 103 Adjustable Potentiometer4 x Buttons2 x Ball Switches1 x Passive Buzzer1 x Active Buzzer1 x For 74HC595 Chip3 x Light Sensitive Components1 x Flame Component1 x Infrared Receiving Component1 x For LM35DZ Component5 x F5 White Yellow Light5 x F5 White Blue Light5 x F5 White Red Light1 x Remote Control1 x USB Cable1 x Jump Wire30 x Bread Line8 x 220Ω Resistance5 x 1K Resistance5 x 10K Resistance2 x 104 Capacitance1 x Breadboard1 x 40 Rows of Stitches1 x Plastic Box1 x Resistance Identification Card