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AJMRTC 12V 4-Channel Relay Module with Opto-isolation, High Low Level Trigger Relay Breakout Board, Anti-interference Switch Control Module for Arduino STM32 ESP32 PLC Industrial Automation Home Smart
- - 4 independent relay channels, supports high-level and low-level trigger switching
- - Built-in optocoupler isolation, separates control circuit and load circuit safely
- - LED indicator for each channel, clearly shows relay on/off working status
- - 12V DC power supply, contact supports AC and DC load for different equipment
- - Compact module, widely used for Arduino ESP32 STM32 PLC smart home automation
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Overview
Specs
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AJMRTC 4-channel relay module operates at 12V DC and supports both high-level and low-level trigger modes. It adopts opto-isolation to effectively isolate the control signal from the load side and reduce electromagnetic interference. Each relay channel has a status indicator light. It can control lights, fans and other electrical loads. It works well with Arduino, ESP32, STM32 and PLC systems, ideal for smart home, industrial control and electronic DIY automation projects.
Specifications
- Brand: AJMRTC
- Channel: 4 Channels
- Working Voltage: DC 12V
- Trigger Mode: High level / Low level trigger selectable
- Isolation: Optocoupler opto-isolated
- Load Contact: Normally Open, Normally Closed
- Control Signal: 3.3V / 5V compatible trigger signal
- Compatible: Arduino, ESP32, STM32, PLC
- Application: Smart home, industrial automation, electrical switch control
- Package Includes: 1 x 4 Channel 12V Relay Module
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by ConnectFlow USA Return Policy
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