5V 4-Channel Relay Module with Opto-Isolation, 10A

This 4-channel 5V relay module enables microcontrollers to switch higher-voltage loads safely and reliably. Featuring opto-isolated inputs, individual LED indicators, and both normally open and normally closed contacts, it is ideal for home automation and robotics builds. It connects directly to development boards, making it perfect for students, makers, and classroom electronics projects.

High-voltage switching capability

Each channel is rated to switch loads up to 10A at 250VAC or 30VDC. The board features both normally open (NO) and normally closed (NC) contacts for flexible wiring configurations.

Microcontroller compatibility

Designed to interface directly with microcontrollers including Arduino, ARM, AVR, and PIC platforms. Opto-isolated inputs help protect low-voltage control circuits from interference.

Visual status and compact form factor

Integrated LED indicators for each channel provide clear visual confirmation when a relay is triggered. With dimensions of 76 x 56 x 18mm, the board easily fits into project enclosures and maker prototypes.