1、Comprehensive Development Kit: This development board kit includes main board, multi LED lights, temperature sensors, buzzer, etc. for all your projects. 2、Beginner Friendly: Simple and intuitive design for this starter kit allows both beginners and professionals to quickly learn and operate. For everyone with an idea. 3、Superior Components: The included premium components in this development board kit ensures project stability and durability for successful completion. 4、Versatile Connectivity: Multiple interfaces and expansion options provide in this development board kit for easy connection to various sensors and modules. 5、Customized Programming: This for R3 development board starter kit supports personalization and diverse sensor applications, catering to different project requirements. Item Type: for R3 Development Board Kit Material: ABS Plastic Battery Type: 9V 1604D 6F22 x 1(not included) 1 x for R3 Mainboard 1 x USB Cable 1 x LCD 1602 Display Screen 1 x 40P Pin Header 1 x Breadboard 65 x Jumper Wire 1 x Relay 1 x Potentiometer 1 x Temperature Sensor 1 x Light Dependent Resistor 1 x Passive Buzzer 1 x 9V Battery Clip 1 x Power Socket 2 x Adjustable Potentiometer 10 x Push Button Switch 10 x Transistor 10 x Green LED 10 x Red LED 10 x Yellow LED 10 x 220Ω Resistor 10 x 470Ω Resistor 10 x 1K Resistor 10 x 4.7K Resistor 10 x 10K Resistor