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The PN2222A is a common NPN BJT used for general purpose low-power amplifying or switching applications
Connect to up to 3 servos simultaneously
P1 setting stop temperature Press the setting button to enter the internal menu
pin configuration
The red cord is an anode
MQ131 Ozone Gas Detection Module For ozone gas (O3) Detector Module Raspberry Pi The PN2222A is a commonMQ131 Ozone Gas Detection Module The MQ131 gas sensor module is a device that can detect the presence of ozone gas (O3) in the air. It is commonly used in applications such as air quality monitors and industrial control systems. The MQ131 sensor operates by using a chemical reaction between the ozone gas and a conductive metal oxide to produce a current. The magnitude of the current is proportional to the concentration of ozone gas in the air. The
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