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

Index: GRL-10915 EAN: 5904422317034

The module has eight SRD-12 relay with a coil powered with a voltage of 12 V along with optical isolation of the input and mounting holes. The system allows you to control actuators with microcontroller ports or any development kit.

Module 8 relays with optoisolation - 10A / 250VAC contacts - 5V coil
€6.91 tax excl.
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Manufacturer: OEM


  • 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 ArduinoRaspberry 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 mmwhich enables connection using the popular connecting cables.


Przekaźnik 8 kanałowy z optoizolacją

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


Examples of application

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


Channels 8
Interface Digital I / O
Package width 15 cm
Package height 2 cm
Package depth 11 cm
Package weight 0.1 kg

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Product reviews

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


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Lutz 18.04.2023 Confirmed purchase Translated review
Price performance perfect. Unfortunately, not all connections lie cleanly on the board. I accept at this price.
Pawel J. 03.03.2021 Confirmed purchase Translated review
Everything's fine
Witold 20.11.2023 Confirmed purchase

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