5 In 1 USB Bluetooth 5.2 Transmitter Receiver Stereo Bluetooth RCA USB 3.5mm AUX For TV PC Headphones Home Stereo Car HIFI Audio  

DIY Universal Acrylic Experiment Platform for Arduinouno and MEGA 2560 R3

SIM808 GSM/GPRS/GPS Bluetooth Compatible Development Board With GPS Antenna COM45 ,R17

0.1uf 50v electrolytic capacitor

Digital 1200X G1200 Microscope Electronic Video Microscope 7inch LCD 12MP Solder Phone Repair Magnifier Built-in Battery  

Disposable ECG EKG Electrodes Medical Electrode Patch EKG Accessories Diameter 50mm Electrode Pads 

22pf  Variable Capacitor

 223pf Duplex Radio Variable Capacitor

6x6x12mm Tactile Push Button Switch Black

"Nextion NX8048T050 5 inch Resistive Touch Screen Man-machine interface HMI kernel

Nextion NX4024T032 3.2 Inch display Man-machine Interface HMI Touch Screen

MOD-TCA9548A CJMCU-9548 TCA9548A 1-to-8 I2C 8-Channel IIC Multiplexer