12V Modbus RTU 4, Channels Relay Module, Input Optocoupler, Isolation RS485 MCU for, Arduino


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Approx Restocking Date: 25 to 30 Days
SKU: 1121215
  1. Product Name:4 Bit ModbusRTU Relay Module
  2. Working Voltage:DC 12V
  3. Working Current:1A
  4. Work Temperature:-25℃~85℃
  5. Work Humidity:5%~95%RH
  6. Size:78*78*20mm


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Brand: Generic
Category: Relay Modules
Tags: Modbus Relay modules

12V Relay Module 4-Channel This is a 12V 4-Channel Relay interface board. Be able to control various appliances and other equipment with a large current. It can be controlled directly by a Micro-controller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) . 12V 4-Channel Relay interface board and each one needs 50-60mA Driver Current. Equipped with high-current relay, AC250V 10A ; DC30V 10A.


  1. Supports all MCU control.
  2. The industrial field.
  3. PLC control.
  4. Smart home control.


  1. .Modbus serial communication
  2. Relay switching output
  3. Convenient AT command control

Package Includes:

1 x 12V Modbus RTU 4 Channels Relay Module

SKU: 1121215 Category: Tag:
Product Name

4 Bit ModbusRTU Relay Module

Working Voltage

DC 12V

Working Current


Operating Temperature (°C)


Working Humidity Range


Size (mm):


Shipping Weight 0.08 kg
Shipping Dimensions 10 × 9 × 2 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China