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the Output LED will glow in a specific concentration of the gas
They are widely used in hotels and restaurants
1 x 12V 16 Channel Relay Module with Light Coupling LM2576 Power Supply
The IC CD4052 has total 16 pins
CP2102 USB 2.0 to UART TTL Converter Module Display Driver Module the Output LED will glowThis USB to TTL adapter is based on the CP2102 USB to TTL serial converter IC. It is commonly used when microcontrollers like Arduino, Raspberry Pi, PIC etc have to communicate with computers through serial communication. As USB has DATA lines D+ and D that can be connected and routed by CMOS switches. The USB can be connected to many peripheral devices and has a very fast speed of data transfer also it is used with Windows, Mac or any other operating
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