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This 4-channel DC 5V relay module features optocoupler isolation for enhanced protection, supports high load currents up to 10A on AC/DC, and includes a fault-tolerant design ensuring reliable operation even if control lines break. Its jumper-configurable trigger levels and screw terminal wiring make it ideal for seamless integration with ARM, PIC, AVR, Raspberry Pi, CNC machines, and more.
B**X
Love it
its great bc it can use just a usb port
C**R
Seems to work with 3v (mostly)
Seems to work with 3v logic level. Had some trouble with the inverse logic jumper. Looks like it floats and you need to use a pull-down resistor.When I did that 3v triggering stopped working though, so maybe the 5v rating refers to inverse logic mode?
T**N
Quality with no issues
Great for my project
D**E
Served my purposes very well. Thank you!
Served my purpose very well.
A**N
All 4 relays dead... Not
All of the relays came dead on arrival. None of them worked. Is what I would have said if the pin out was exactly the same as the 12 volt module but it's not. Whoops.
A**H
Triggers reliably from Raspberry Pi
These are fine set of relays, which trigger reliably from Raspberry Pi. My experience with such boards has been hit or miss because Raspberry Pi’s high pin voltage is not really that high. This board performs beautifully without the need to enhance the trigger voltage.
K**N
Very easy to use, flexible, and inexpensive
This function used to be called a "VSER" or voltage-sensitive electronic relay. It has a front-end comparator which measures the voltage of a DC signal, then it energizes a relay when the measured voltage falls within the preset range. We used this device to interface with a Gamewell fire alarm , then used the relay to activate a light and a bell. In the recent past, this function required a small custom circuit, but the relay handles it perfectly. High current capacity in the relay (10A) allows many uses with small computers to drive large loads from voltage outputs.
T**D
Tolerance varies, take note.
Once of these modules was intermittently closing the relay with a 4.5V source, fully capable of 300mA+. Sometimes it wouldn't close, and the relay would need to be physically tapped for it to actually close. I measured the current to that whole module at 81mA when closed. Yes, that's not the full 5V, but I found it worrying. I replaced it with another module and the replacement was able to consistently close with a voltage all the way down to 3.8V. The draw on that module was 95mA. So these have a large variance in tolerance. You may want to test each module to see if it can handle small voltage sags.
Trustpilot
3 weeks ago
2 months ago
