# Raspberry Pi MODBUS HAT

Isolated Dual RS-485 (Modbus) Industrial HAT++ for Raspberry Pi

- **Seller:** [Brechel Electronic](https://lectronz.com/stores/be-iis), Plochingen, Baden-Wurttemberg, Germany
- **Price:** €82.00 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Kits, Raspberry Pi, RS232/RS485
- **Product page:** https://lectronz.com/products/be-iis-hpp-modbus

## Links

- [Documentation](https://www.be-iis.eu/download/tindie/be-iis-hpp-modbus-b-product-page/)
- [Code](https://www.be-iis.eu/download/tindie/be-iis-hpp-modbus-b-github/)
- [Design Files](https://www.be-iis.eu/download/tindie/be-iis-hpp-modbus-b-datasheet/)
- [Schematics](https://www.be-iis.eu/products/BE-IIS-HPP-MODBUS_B/schematic.pdf)
- [Bom](https://github.com/be-iis/be-iis-installer/tree/main/products/BE-IIS-HPP-MODBUS-REVB)

## Images

![Raspberry Pi MODBUS HAT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzE0NDksInB1ciI6ImJsb2JfaWQifX0=--199e395e07c01709af48cb5cf0333dfcdc0c3dcc/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2026-07-07T19-45-06.952Z-BE-IIS-HATMODBUS_TOP_real.jpg)
![Raspberry Pi MODBUS HAT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzE0NTAsInB1ciI6ImJsb2JfaWQifX0=--af1bd72fc69e8d211f9c9f1cd1978d1b5b248532/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2026-07-07T19-45-06.952Z-BE-IIS-MODBUS_ANNOTATED.jpg)

## Description

Modbus over RS-485 enables robust long-distance multi-drop communication and is a well-established, future-proof industrial communication standard.

This HAT provides two fully independent, galvanically isolated RS-485 interfaces with automatic direction detection and, as part of the BE-IIS HAT++ ecosystem, is stackable with other HATs from the portfolio for seamless system expansion and simplified system integration.

The open-source BE-IIS Installer configures this HAT—and all other HATs in the BE-IIS portfolio—in minutes, without requiring in-depth Linux knowledge.

## Shipping policy

If your shipment appears to be lost or has not arrived within a reasonable time, please contact us. We will investigate the issue with the shipping service provider and arrange a replacement or refund where appropriate.

Please ensure that the delivery address provided at checkout is complete and correct. Tracking information is provided whenever available.