Upgraded Electronics Component Fun Kit Power Supply Module, Jumper Wire,, Stm32 Product Details Minidodoca Electronics Fun Kit - The upgraded kit not only power adapter but also has more component specifications, it comes with commonly used sensors and components. Compatible with Raspberry Pi, it can meet almost all your needs. Kit includes:9v1A power supply Adapter+ Breadboard Power Supply Modules+Battery Clip+830 Breadboard+DuPont wire+ IC 4N35, IC 74HC595?IC 74HC138+4-digit digital tube display+12 values Capacitor+Alligator clip+Banana Plug+10 values Resistor+5 values LED+buttons+Buzzer+Precision Potentiometer+ Thermistor+RGB LED+ Photoresistor+Pin header+Transistor+Diode etc. Power module with 5.5MM * 2.5MM input interface, you can choose 9v 1A adapter as input or choose 9v battery as input (the battery needs to buy their own) LED working voltage 2.2V-3.4V, power module output is 3.3V,5V, please connect series buck resistor to avoid damage when using.4 digital tube display is common anode, please pay attention to the wiring rules when using? The products are all tested and then divided to ensure that each component works properly to the maximum extent possible.Use process has any questions, please contact our customer service. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.