1 Channel 5V Relay Module with Optocoupler Isolation(30A)

This is a heavy-duty 1-channel relay board designed to interface a 5 V logic or microcontroller output with high-power loads, offering optical isolation on the input side to protect the control circuitry. It uses a relay capable of handling up to 30 A at AC voltage (e.g. 250 V AC) or high-current DC loads. The module supports selectable high-/low-level trigger mode, includes indicator LEDs for power & relay state, and screw-terminal connectors for safe wiring of load side (COM / NO / NC). Ideal for automation projects where you need to control high-power appliances (motors, heaters, large lamps etc.) from a low-voltage logic board, while maintaining isolation and reliable switching.