8 Channel 5V Relay Module With Opto Isolated Inputs, High Or Low Level Trigger, Jumper Selectable, 5mA Trigger Current, Individual Relay Control On Each Channel For DIY Projects
✔️ 8-channel 5V relay module with opto-isolated inputs; 1 unit
This 8-channel relay module provides independent control for each channel via opto-isolated digital inputs, letting you switch AC or DC loads from a microcontroller or development board. It’s commonly used in DIY automation, home projects, and prototyping where reliable isolation and strong current switching are needed.
✅ 8-channel 5V relay module with opto-isolated inputs
✅ Each channel independently switches on/off via opto-isolated input
✅ Jumper-selectable high-level or low-level trigger
✅ Trigger current 5 mA for opto-isolator
✅ Max load: AC 250V 10A; AC 125V 15A; DC 30V 10A
✅ Fault-tolerant design; control line break won't move relay
✅ Screwed terminal plate and fixed bolt holes
✅ Standard interface for direct microcontroller control
💡 How does opto isolation on an 8-channel 5V relay module improve reliability?
In short, opto isolation keeps the control circuit separate from the load, protecting the controller from noise and voltage spikes.
- Reduces ground loops and electrical noise- Improves stability when multiple relays switch in noisy environments
- Enables safe interfacing with different control voltages and logic families
- Supports fault-tolerant operation by isolating the drive from the load side
✝️