The YM04-CM03-PCBA with Sensor Modules ROHS manufactured by YTL is an integrated electronic component that is made up of two parts. The first part is a PCB (Printed Circuit Board) with a set of surface mount components that makes up the physical hardware. This PCB contains various components such as resistors, capacitors, transistors, and other electrical parts. The second part is a set of sensor modules that are embedded into the printed circuit board, which are used to detect various physical, chemical, or environmental conditions. The sensor modules are ROHS (Restriction of Hazardous Substances) compliant, meaning that they do not contain any hazardous materials that could pose a threat to the environment or human health. This electronic part is used in a variety of applications, such as in medical device and industrial control systems.