8-channel 5V relay module

This 8-channel relay module with Songle SRD-05VDC-SL-C relays is perfect for controlling multiple devices or circuits using an Arduino, Raspberry Pi, or other microcontrollers. The board operates at 5V and can be triggered via TTL signals. Built-in optocouplers provide safe isolation between the control side and the high-voltage side, ensuring reliability and protection.

The relays can switch both AC and DC loads such as lights, pumps, motors, and other electrical devices. With eight relays on a single compact PCB, this module is a versatile solution for automation and smart home projects.

Note for Raspberry Pi users: this module requires 5V logic. Since Raspberry Pi GPIOs operate at 3.3V, direct control may not be reliable. It is recommended to use a level shifter or transistor driver circuit, or alternatively choose a relay module specifically designed for 3.3V logic compatibility.

Key features

• 8 channels with high-quality Songle SRD-05VDC-SL-C relays
• Active low triggering, designed for 5V logic systems
• Optocoupler isolation for improved safety and reliability
• Supports AC and DC loads (up to 10A at 250V AC or 30V DC)
• Individual status LEDs for each relay channel
• Directly compatible with Arduino and other 5V microcontrollers
• Raspberry Pi use recommended with level shifter or 3.3V-compatible relay module

Technical specifications

• Number of channels: 8
• Relay type: Songle SRD-05VDC-SL-C
• Input voltage: 5V DC
• Trigger: active low
• Contact rating: 10A at 250V AC or 30V DC
• Isolation: optocouplers between control and relay circuits
• Dimensions: approx. 134.6 × 53.6 × 19.5 mm
• Weight: approx. 122 g