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4R-D7 Modbus RTU Relay Module

The image shows a blue relay module with four green terminal blocks and various electronic components, designed for Modbus RTU communication. It features multiple relays and connectors for integration into electronic systems.
  • Product Code

    4R-D7


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  • Availability: in stock Shipping 24/48h

Price (Incl. VAT):

15,10 €

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Najniższy koszt dostawy: 12,98 zł

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Product Description

4R-D7 Modbus RTU relay module

The 4R-D7 module allows you to control 4 relays using Modbus RTU protocol Communication with the device can be done via RS-485 or UART TTL interface. In addition, the device has 4 control inputs protected by optocouplers (input voltage range: 3.3 V ... 30 V). The voltage from the control inputs is not the voltage directly supplying the relay coil. Note: The selection of the control interface is made using jumpers located on the board It is not possible to control the outputs using both communication paths simultaneously.


Technical specifications:



Control:RS-485 / UART TTL
Protocol:Modbus RTU
Baudrate:4800 / 9600 / 19200 b/s (default: 9600 b/s)
Number of inputs:4 pcs.
Number of relay outputs:4 pcs.
Load capacity of contacts:10 A / 250 V AC,
10 A / 30 V DC
Output:4 x NO/NC
Selected features:
  • LED signaling
  • Control inputs protected by optocouplers, which allows the use of control signals with voltages in the range of 3.3 V DC ... 30 V DC
  • UART interface input is goldpin mountable for signals with voltages adapted to TTL level (3.3 V DC / 5 V DC)
  • Ability to configure the device address (with memorization of settings after power loss) in the range of 1 - 255 (default address 255)
  • Ability to set relay trip delay (base unit: 0.1 s, value range: 0.1 s ... 6553.5 s)
  • Protection against reverse polarity of input voltage
Power supply:7 V ... 24 V DC (no power supply included)
Weight:0.092 kg
Dimensions:93 x 91 x 20 mm

Szczegóły dotyczące zgodności produktu z przepisami: Osoba odpowiedzialna za produkt

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