Four Channel 5V Relay Module With Optocoupler Isolation And High Low Level Trigger Ideal For Arduino STM32 Projects Prototyping And Diy Electronics Gear
✔️ 4-channel 5V relay module with optocoupler isolation and trigger
This four-channel 5V relay module provides four independent relay channels on a single board, designed for easy control of high-power devices from microcontrollers like Arduino, STM32, or Raspberry Pi. It features optocoupler isolation to protect your MCU from voltage spikes, and a jumper to select high- or low-level trigger, enabling seamless integration with different logic levels. This package represents a 1-board pack containing four relays for prototyping and DIY electronics projects.
✅ Four DC 5V relays on one board
✅ Optocoupler isolation protects microcontroller
✅ Jumper-selectable high/low level trigger
✅ AC load: 250V/10A; DC load: 30V/10A
✅ Fault-tolerant safety design maintains safe state if control wires fail
💡 What is a multi-channel 5V relay module used for in microcontroller projects?
It's handy for safely switching multiple devices from a single controller with optocoupler isolation.
- controls multiple mains devices from one board- protects MCU with optocoupler isolation
- jumper-selectable trigger types enable different logic levels