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The I2C Logic Level Converter Bi-Directional Module is capable of stepping down 5V signals to 3.3V, and can also step up 3.3V signals to 5V.
RS-485 interface module using the MAX485 IC. RS-485 is ideal for longer distance communications compared to standard TTL or RS-232 serial. Arduino compatible
Level Converter from 3.3 to 5 Volt and from 5 volt to 3.3 Volt- 2 Channel- 3.3 Volts to 5 Volt - 5 volt to 3.3 Volts- I2C Bus option- Small and Compact- Headerset Included