> For the complete documentation index, see [llms.txt](https://wimaniot.gitbook.io/wiman-communication-technologies/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wimaniot.gitbook.io/wiman-communication-technologies/iot-models/io-cards.md).

# IO CARDS

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### [WT30i](/wiman-communication-technologies/iot-models/io-cards.md#wt30i)

Compact **Analog Modbus IO card** designed for reliable voltage input monitoring in small industrial automation and data acquisition systems.
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### [WT36i](/wiman-communication-technologies/iot-models/io-cards/wt36i.md)

Versatile **Analog Modbus IO card** supporting multiple analog and digital inputs with relay output for flexible field monitoring and control.
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### [WT60i](/wiman-communication-technologies/iot-models/io-cards/wt60i.md)

High-capacity **Modbus Analog/Digital IO expansion card** built for complex industrial applications requiring multiple input/output channels.
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