4-Channel 5V Relay Module for Arduino & Raspberry Pi Board
4-Channel 5V Relay Module for Arduino & Raspberry Pi Board
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- [4 RELAY CHANNELS]: Control 4 devices simultaneously—ideal for home automation, industrial control, robotics, and DIY projects.
- [5V DC OPERATING VOLTAGE]: Compatible with 5V microcontrollers like Arduino, Raspberry Pi, ESP32, and other control systems.
- [HIGH & LOW LEVEL TRIGGER]: Supports both trigger modes for flexible integration with various sensors and automation systems.
- [OPTICAL ISOLATION & PROTECTION]: Built-in optocouplers protect your control circuits and ensure safe, reliable operation.
- [EASY INSTALLATION & MONITORING]: Screw terminals and status LEDs on each channel make wiring easy and provide real-time relay feedback.
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I ordered a 5V and a 24V, four-channel relay. They both came with the same SRD-05VDC-SL-C relay modules. One came as an eight-channel relay, despite having a label that it was a four-channel relay. I misunderstood the description and thought that the coil voltage was 24V. The build quality is decent, and the inputs have screw in terminal blocks, so it is more secure than simple pins. Overall, the build quality is good, but the description seems confusing if the voltage described is not the coil voltage. There also seems to be some quality inspection issues if the eight-channel relay I received was labeled as a four-channel relay.
I got this module to experiment with my pi. So far, it's been working well without any issue and I am working on building an integration to be able to power cycle my network equipment and control it with the pi. It's been able to control the contacts without any issue and has worked just how I expected.
Good relay module. Each relay is rated for up to 10 amps 250 volts AC. I have used many of these type of relay banks for automated switching of power to electrical outlets. These are handy for pretty much anything you want to toggle power to within spec. I have used them with raspberry pi's. These would not work well for higher power loads.The unit I received seemed to take some beating on its journey to the warehouse. The anti-static bag had a ton of indentations where the pins pressed up against the material. Given this all solder joints look solid and all 4 channels work well.
This module can make controlling high current devices from logic inputs easy.You don't even need to solder anything and the connector blocks are well labeled and can take either flat or x screwdrivers. It even has mounting holes on the corners.Jumpers on the board let you choose active low or active high inputs for each of the relays.An LED shows that the board is powered and only draws a couple of milliamps.Each relay has an LED to show when it’s on. The relays draw about 90 mA when on.As you can see in one of the photos, a 5V input through a 1K resistor provides more than enough current to activate the relay drivers on the board. Nice!
