Item Type: Projects Kit Material: PCB Battery: AA battery x 6 (shipped without battery) Use: Applicable for R3 kit 1、COMPLETE KIT: This is the most complete kit for beginners, which is very interesting and easy to use. 2、FULLY COMPATIBLE: The kit is fully compatible with all open source electronic prototype platform modules. 3、EASY WIRING: An embedded extension version can be applied to most modules in the kit, which can simplify wiring and avoid errors. 4、HIGH EFFICIENCY: The development board kit has high conversion efficiency and simple adjustment operation. 5、RELIABLE MATERIALS: The projects kit is made from excellent materials and components, with stable performance. 1 x 5V Stepping Motor 1 x 5V Stepping Motor Drive Board 1 x 1602 LCD Screen 1 x 3 Color Patch 10 x Large Key 1 x Plug In Components (Green Bread Board) 1 x Water Level 65 x Bread Line 5 x Small Key 1 x Infrared Receiver Element 1 x LM35 Element 1 x Flame Element 1 x Hydrargyrum Element 1 x Photosensitive Element 1 x Red Board 1 x Key Chain 1 x Row Pin 1 x 5K Adjustable Potentiometer 1 x HHC Small Motor 1 x SR04 Ultrasonic 1 x Four Digit Nixie Tube 2 x One Digit Nixie Tube 1 x 8x8 Dot Matrix 6 x F5 LED White 10 x F5 LED Yellow 10 x F5 LED Green 10 x F5 LED Red 1 x Black Rocker 1 x F R3 1 x White Card 1 x USB Cable 1 x Active Buzzer Element 1 x Passive Buzzer Element 1 x 10K Adjustable Potentiometer 1 x IC 1 x 9g Steering Gear 1 x Single Circuit 5V Relay 1 x 1x40 Straight Needle 1 x 1x40 Curved Needle 1 x Female to Female Cable 1 x 830 Hole Bread Board 1 x 6 Pcs AA Battery Box 1 x 595IC 1 x 4x4 Membrane Key 5 x 1K 5 x 10K 8 x 220R 1 x Storage Box