Our introductory kit is designed to get you started quickly and easily on your path of learning electronics. It's a great introductory kit in general as it's designed for everyone even novices who has very little or no electronics and programming experience. Using high-quality silicon materials to increase the service life of electronic components. A variety of combination sets can meet different needs. You can enjoy the fun of DIY your own and a sense of accomplishment.  1 X Power Supply Module (Do Not Use Voltage Higher Than 9v)  1 X 830 Tie Pad  1 X 65 Jumper Wire  140 X Solderless Jumper  20 X Female To Male Wire  2 Sets (40pcs) X Needles  1 X Precision Potentiometer  2 X Photoresist  1 X Thermistor  5 X Diode Rectifier (1n4007)  5 X Npn Transistor (Pn2222)  1 X Ic 4n35  1 X Ic74hc595  1 X Active Buzzer  1 X Passive Buzzer  10 X Button  10 X 22pf Ceramic Capacitor  10 X 104 Ceramic Capacitor  5 X Electrolytic Capacitor (10uf50v)  5 X Electrolytic Capacitor (100uf50v)  1 Set X  Led Lights (51pcs) 100 X Resistors (10r, 100r, 220r, 330r, 1k, 2k, 5k1, 10k, 100k, 10pcs For Each) Item Type: introductory Kit Material: Silicon Item Type: Starter Kit Material: Silicon