1/2/4/8‑Channel Relay Module DC 5V 12V 24V Control Board With Optocoupler Isolation High Driving For Arduino PLC Industrial Control

1,2,4,8‑Channel 30A Relay Module

📌 Product Overview

This 1‑2‑4‑8‑channel high‑power relay module supports 5V / 12V / 24V DC operating voltage. It adopts genuine 30A high‑power relay, each channel equipped with optocoupler isolation for strong anti‑interference performance. Trigger current is 5mA, supports jumper‑selectable high‑level or low‑level trigger. Each channel comes with LED status indicator, uses double‑sided PCB and high‑current terminal blocks. Available in 1‑channel, 2‑channel, 4‑channel, 8‑channel versions. Suitable for Arduino, MCU, PLC industrial control, household appliance switching and high‑current load control projects.

✨ Core Features

1. Multiple versions optional: 1‑channel, 2‑channel, 4‑channel, 8‑channel relay module.
2. Double‑sided PCB board, reasonable layout, neat wiring.
3. High‑power 30A relay, load capacity up to AC250V 30A / DC30V 30A.
4. Optocoupler isolation per channel, excellent anti‑interference capability.
5. Black 9500 high‑current terminal blocks, convenient wiring.
6. Independent LED indicator for each channel, real‑time display relay ON/OFF status.
7. Isolation slots between control area and load area for safety improvement.
8. Jumper cap selectable high‑level / low‑level trigger mode, trigger current 5mA.
9. Operating voltage optional: 5V, 12V, 24V DC.
10. Industrial‑grade working temperature: -40℃ ~ +85℃.

📋 Product Parameters

Item	Parameter
Channel Option	1‑channel / 2‑channel / 4‑channel / 8‑channel
Operating Voltage	5V / 12V / 24V DC
Trigger Mode	High‑level / Low‑level trigger (jumper selectable)
Trigger Current	5mA
Max Load	AC 250V 30A ; DC 30V 30A
Isolation	Optocoupler isolation per channel
Indicator	Per‑channel relay status LED indicator
PCB	Double‑sided PCB
Terminal	9500 high‑current terminal block
1‑Channel Dimension & Weight	72X40X22mm ; 45.2g
2‑Channel Dimension & Weight	72X70X22mm ; 85.5g
4‑Channel Dimension & Weight	72X126.5X22mm ; 167g
8‑Channel Dimension & Weight	72X249.5X22mm ; 329.8g
Working Temperature	-40℃ ~ +85℃

📐 Dimension Info

‑ 1‑way:72X40X22mm，Net weight 45.2g ‑ 2‑way:72X70X22mm，Net weight 85.5g ‑ 4‑way:72X126.5X22mm，Net weight 167g ‑ 8‑way:72X249.5X22mm，Net weight 329.8g

⚠ Important Usage Notice

Only DC power supply is allowed, please match module rated supply voltage. Do not exceed rated load current and voltage to avoid module burning. Relay service life is affected by ambient temperature and load characteristics, please verify under actual working conditions. Use in well‑ventilated environment for heat dissipation. High‑temperature environment will reduce electrical durability of relay. Do not disassemble or repair without authorization. Kind reminder: If there are version differences or images not been updated, please refer to the actual product.

🛠 Application Scenarios

MCU / Arduino / PLC control, industrial automation control, household appliance switch control, high‑current load switching, intelligent cabinet control, robot equipment, DIY electronic project.