---
lang: "en"
title: "MR-DO4 Modbus RTU module with 4 digital outputs"
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end_of_life: "false"
---

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MR-DO4 Modbus RTU module with 4 digital outputs has been developed for decentralized switching tasks

The Modbus module with 4 digital outputs has been developed for decentralized switching tasks. It is suitable for switching electrical components such as motors, contactors, lamps, shutters, etc. In this case, the relay contacts must be protected by appropriate load-dependent measures. The module is equipped with a manual control for manual switching of the relays. The outputs can be switched via standard registers using a Modbus master. The module address, bit rate, and parity are set with two rotary switches on the front side or via software. Suitable for decentralized mounting on a TH35 DIN rail according to IEC 60715 in electrical distribution cabinets

## Features

- Modbus RTU address range from 00 to 99
- RS485 bus interface (two-wire bus)
- Transmission speed from 1200 to 115200 bit/s
- Operating voltage 24 V AC / DC +/- 10% (SELV)
- Current consumption 200 mA (AC) / 70 mA (DC)
- Relative duty cycle 100%
- Output / contacts 4 changeover contacts (4PDT)
- Output / switching voltage 250 V AC
- Output / continuous current 5 A / output
- Output / switching frequency 360 cycles / h
- Display Green, red, and yellow LED
- Dimensions (W x H x D) 35 x 69.3 x 60 mm
- Weight 95 g
- Operating temperature range -5 ° C to 55 ° C
- Storage temperature range -20 ° C to 70 ° C
- Input protection for enclosures / terminal blocks IP40 / IP20

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Source: https://shop.marcomweb.it/en/modbus/mr-do4-modbus-rtu-module-with-4-digital-outputs

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