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Yoctopuce Yocto - Serial Sensor Adapter

  • 7500 monitors these Industrial IoT sensors.


This IoT sensor device is a USB to serial adapter, similar to the RS-232, except it uses logical ( TTL / CMOS ) signal levels at 0 / 3.3V or 0 / 5V. The module does not require a driver and does not install a virtual COM port.

It is able to autonomously interpret serial data coming from any external serial board and expose measures as if they came from a Yoctopuce sensor, with all of the features like a unique identifier, polling, and callbacks. Be aware that this device will not work with applications designed to use a COM port: it is designed to be used with Yoctopuce API only and is meant to be used with GSM sensor hubsWifi sensor hubs or Ethernet sensor hubs.

If needed, the device can also provide a 3.3V or 5V voltage source to power the external serial board. The 3.3V source can provide up to 200mA.

The device can work with standard logical levels (signal high when the line is idle), or with inverted levels. RTS / CTS can only be used with standard logical levels. The device can also analyze a serial bidirectional communication between two tiers without interference.

If you need to interface a serial port working with RS232 levels, use a Yocto-RS232. If you need to monitor particulate matter and an optical particle counter sensor like the Alphasense OPC-N2, you'll use this SPI sensor adapter.

Do you or your organization need to monitor air quality, specific gases, and/or particulate matter like PM2.5 and PM10?

Use this TTL serial sensor adapter to connect to Alphasense raw air quality sensors like the OX-B421 or NO2-B42F.

Have a look at this step by step tutorial HowTo video on using these TTL serial sensor adapters to monitor air quality.

Or you can use 0-10V sensor adapters to monitor Alphasense air quality and gas sensors like you see here.

Please don't hesitate to get in touch with me at if you've got any questions about monitoring with

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