Module 8 relays with optoisolation - 10A / 250VAC contacts - 5V coil

• Supply voltage of the logic part: 5 V
• Activated with the low status
• Relay: SRD-05VDC-SL-C (documentation)
  • Coil voltage: 5 V
  • The maximum voltage of contacts: 250 VAC, 30 VDC *
  • Maximum current: 10 A
• Optoinsulation EL817 (documentation)
• Board sizes: 79 x 71 mm
• Diameter of the mounting holes: 3 mm
• Distance between holes: 61 mm

* Maximum contact voltage depends on the type of load - details in the documentation, tab. 7. Contact Rating.

The module allows to control the actuators consuming the current up to 10 A using the microcontroller's ports or any commissioning set (including Arduino, Raspberry Pi and STM32Discovery). Optical isolation seperates the control signal from the part associated with the power of relay, thereby providing work safety of the management system.

For proper operation, it is sufficient to connect the power of the relay coil and the digital control signal. You can manage different signal than the power of the module. Pins are the standard goldpin straps, pitch of 2.54 mm, which enables connection using the popular connecting cables.

The relay has the following pins:

• VCC - power supply of 5 V.
• IN1...8 - control inputs of the relay activated by the low status.
• COM - power of the control signal: 3.3 V or 5 V.
• GND - ground of the system.
• Connectors KF (ARK) - relay contacts:
• • NC - COM shorted by default
  • COM - shared, shorted with NC or NO, depending on the control signal
  • WELL - splayed by default

• Driver of lighting
• The driver of actuators
• Switch for electric devices, including motors

• Documentation of the relay SRD-05VDC-SL-C
• Documentation and connection of the module
• Documentation of the optocouopler EL817
• Example of connecting a relay to the Raspberry Pi