Upgraded Electronics Component Fun Kit Power Supply Module, Jumper Wire,, Stm32 Product Features 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. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!