5V 1-Channel Relay Module with Optocoupler Isolation
Key Features
Model: 1-Channel Isolated Relay Module
Control Signal: 5V DC Trigger Line (Low or High logic options)
Switching Limits: 10A at 250V AC / 10A at 30V DC
Isolation Tech: Onboard Optocoupler protection circuit
Output Terminals: Screw block layout (Normally Open / Common / Normally Closed)
The Relay Module is an electromagnetic switch that allows a low-voltage microcontroller to safely turn high-voltage mains appliances (like 220V household lights or water pumps) on and off. The optocoupler separation ensures high-voltage spikes cannot travel backward to fry the logic brain.