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The IS4310-ISO485M6 is a ready-to-operate module integrating the Modbus RTU Slave chip IS4310 with an isolated RS485 Transceiver.

I2C Modbus RS485 ISOLATED (IS4310)

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$9.27

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Home automation
Components
I2C

The IS4310-ISO485M6 is a ready-to-operate module integrating the Modbus RTU Slave chip IS4310 with an isolated RS485 Transceiver. This solution reduces to the minimum expression the design effort of integrating a Modbus RTU Slave with an isolated RS485 electrical interface.

The module is daisy-chained: it integrates two RJ45 connectors with the standard Modbus pinout. The module can be directly soldered to your PCB with its castellated holes, or you can solder a pin header and use it as a module.

Isolation Benefits Isolation is a good solution for industrial environments with long-distance cables, significant ground potential differences between devices, or high electrical noise.

Links to code and documentation

Documentation (inacks.gitbook.io)

Code (github.com)

Shipping policy

We ship all products from Barcelona via Correos within 1 to 3 business days, with a tracking number.

Delivery usually takes a few days to a week within Europe, and around one week for the rest of the world.

Here are some extras that might be useful for your project!
This chip implements the Modbus stack for this module

The seller

Inacks store

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Terrassa, Barcelona, Spain
1 order since May 12, 2025
We find communication protocols beautiful.
Implementing them as stacks inside chips connects us to the mindset of the engineers who designed them. You can feel the passion they put into solving communication challenges — whether it's for industrial systems, lighting, or sound.
But when you're building your own project, diving into protocol implementation can eat up a lot of engineering time (or your client's budget!).
So why not save that time and focus on what truly makes your product unique — instead of reinventing the wheel?