This is a 3.3V to 12V Mini DC-DC Boost Step Up Converter Board Module 5V/ 8V/ 9V 12V Output is a DC-DC Boost step-up converter module that is used to step up the voltage.
The CP2102 Module is a compact and versatile USB to UART bridge module that facilitates communication between a computer's USB port and UART devices, such as microcontrollers, sensors, and other electronics.
The 2SC5241, 2SC-5241, C5241 5241 is a 600V 5A 30W NPN Bipolar Power Transistor, TO-220F Package High Voltage Transistor, Manufactured By NEC Semiconductor