Working voltage: DC4-5V | The flash Christmas tree kit consists of a combination of three circuit boards, have clearly marked the electronics components, it's easy to assemble. It is not only a decorative gift for Christmas, but also a PCB board for practicing welding skills. | 2 flashing modes, the led lights will illuminate according to the music spectrum. | This cool LED Flashing Xmas Tree will be a wonderful gift to kids girls boys friends and family, or DIYers, soldering fans. It can be used as a desk exhibition toy and also be beautiful decoration at home on holidays and festivals like Christmas. You can also use it as a delicate bed lamp. | Comes with user manual and online PDF file, which will guide you how to finish step by step, perfect for school basic electronics experiment projects.

Note: The white smudge is not corrosion damage, it's flux, can wipe it off with a rag, does not affect the use of the module | This ir transmitter sensor module is directly launched by a single tube, it requires waveform modulation through the program. | It is suitable for infrared communication, infrared remote control, apply to a variety of platforms including Arduino/51/AVR/ARM | With signal indicating LED, easy to observe and debug. | Pin Definitions: (1) Output (2) Vcc (3) GND

100Pcs Female Pin Connector Terminal 2.54mm Pitch for Dupont Jumper Wire Cable | 100Pcs Male Pin Connector Terminal fit 21awg for Dupont Jumper Wire Cable | Great items for wire connecting in the field of Automotive,electrical appliances,medical and Internet | Package weight of the Product:3.17 Ounces

Diameter: 36mm | Frequency Response: 45kHz | To-noise ratio: 92 ¡À 3dB | Application: DIY electronic toys, radio, interphone, multimedia speakers, mini box speakers, etc.

Total Length(approx.): 20cm | Pins Number: 2Pins | 10 Pairs Female & Male Plug Connector Wire Cables

2PCS Round Micro Speaker Diameter 28mm 8Ohm 8R 2W | Height(Thickness):6mm | Application: DIY electronic toys, radio, interphone, multimedia speakers, mini box speakers, etc. | Resonance Frequency: 650±20%Hz ( at 1.0V )

This board is especially useful for preserving a prototype or experiment you just created on a solderless breadboard by soldering all the pieces in place | Breadboard PCB for any type Raspberry Pi GPIO | Gold plated finish prevents oxidation, High quality Gold finish for easy soldering | All holes are through-plated for strength | Adaptable with a variety of MCU boards. Compatible with Arduino Nano, Pro Mini, NodeMCU, etc.