---
lang: "en"
title: "RESI-8RTD-SIO 8-input RTD MODBUS RTU Module"
sku: "RESI-8RTD-SIO"
canonical_url: "https://shop.marcomweb.it/en/modbus/resi-8rtd-sio-8-input-rtd-modbus-rtu-module"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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RESI-8RTD-SIO 8-input RTD MODBUS RTU Module (2-wire, 3-wire, and 4-wire)

Our IO modules are designed for any application in the building automation, industrial automation, and infrastructure sectors. With a size of 4/8 or 12MU, depending on the total amount of embedded IOs, these IO modules fit into any electrical panel. We only offer IO modules suitable for the 45mm cutout of a standard electrical panel.

Basically, we provide two versions of each IO module: One with an integrated RS485 interface with MODBUS/RTU Slave protocol and one with an Ethernet interface and MODBUS/TCP protocol. All IO modules also support a simple ASCII protocol to use the IOs with a media control system or an IoT controller using Node-RED, NodeJs, or Python. The Ethernet versions support, in addition to the MODBUS/TCP Server protocol, also the MODBUS/RTU protocol via Ethernet. All our modules have a wide power supply range from 12-48 Vdc.

### Features

- IO module with 8 inputs for RTD sensors.
- Different RTD sensors can be used with the module.
- 2-wire, 3-wire, or 4-wire sensor connection.
- Each channel can be configured for a different RTD sensor type.
- The group of RTD sensor inputs is galvanically isolated from the rest of the module.

## Technical Specifications

- Input/output module
- MODBUS/RTU slave protocol and ASCII text
- 8 temperature sensor inputs: PT100, PT1000, NI1000, NI120, OHM
- Ports: 1xRS485
- Baud rate: 300-230400bd
- Parity: none, even or odd
- Data bits: 8
- Stop bits: 1 or 2
- Housing: dimensions (LxWxH): 143x110x60mm, 8 UM
- DIN rail EN 50022 or wall mounting
- Power supply 12-48V=
- TARIC number: 8538 90 91
- Certification: CE

---

Source: https://shop.marcomweb.it/en/modbus/resi-8rtd-sio-8-input-rtd-modbus-rtu-module

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.