USB UART Converter CH340G - USB to Serial microsd module It has a logic level

It has a logic level of 3

measurement readouts

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and finished builds

What does the Reed Switch Module measure

USB UART Converter CH340G - USB to Serial microsd module It has a logic levelIt's a small USB to TTL serial tool, using the CH340G chip. You can use it to connect some serial device to your PC via USB port. Features Compatible with WINDOWS 98 ME 2000 XP Server 2003 VISTA Server 2008 Win7 Win8 32 bit & 64 bit To test the unit use the shunt to connect TX and RX (loopback test) 3. 3V and 5. 0V outputs are available to power your project directly from the adapter. Wiki & External links Drivers