Relay module 8-channel 5V DC 10A EB638543327

This 8-channel relay module operates at 5 V DC and provides eight isolated mechanical relay outputs with a maximum switching current of 10 A per channel. It is intended for controlling multiple loads such as DC and AC motors, lighting circuits, heating elements and household appliances from microcontrollers, PLCs, manual switches or other control sources. The module offers convenient screw terminal and pin header connections for input signals and output loads, making it suitable for prototyping, automation projects and compact installations.

Advantages

The relay module combines a compact footprint with individual channel isolation to reduce interference between circuits. Each channel uses a mechanical relay rated for up to 10 A, allowing direct switching of moderate power devices without additional driver relays. Screw terminals simplify wiring of loads and power, while pin headers support direct connection to development boards and microcontrollers. The 5 V DC coil rating matches common logic-level control signals and facilitates integration into low-voltage control systems.

Suitable for

• Home automation circuits and lighting control
• Prototyping with Arduino, Raspberry Pi and other microcontrollers
• Switching motors, pumps and small AC loads
• Laboratory test setups and control panels
• Small industrial or workshop automation tasks

Key specifications

• Number of channels: 8
• Coil (control) voltage: 5 V DC
• Maximum switching current per channel: 10 A
• Contact type: mechanical single-pole (SPST or SPDT depending on module wiring)
• Connection types: screw terminals for load outputs and power, pin headers for control inputs
• Isolation: separate relay contacts provide electrical isolation between control and load circuits

How to use

Power the module’s 5 V supply according to the module markings, connect control signals from the microcontroller or controller board to the corresponding input pins, and wire the loads to the relay output screw terminals following safety practices for the switched voltage. Verify polarity and appropriate power ratings before switching. When using microcontroller outputs that cannot source required coil current directly, use the module’s input drivers or an external transistor/driver stage as specified by the module documentation. Test each channel at low voltage first to confirm correct wiring before applying mains or high-power loads.

Usage recommendations

Ensure load currents do not exceed 10 A per channel and allow for inrush currents of motors or lamps when sizing circuits. Maintain proper spacing and insulation when wiring AC mains, use fuses or circuit breakers where appropriate, and follow local electrical codes. For noisy inductive loads, include appropriate suppression (snubber circuits or RC networks) if required to extend relay contact life.