Review on 🔌 DZS Elec 2-Pack 5V 4-Channel Relay Module: Optocoupler Low Level Amplifier Trigger JD-VCC Power Amplified VCC Power - Efficient & Reliable by Tim Blandin

I just received these two quad relay modules and they all worked as expected. The relays each draw 71mA when on. So keep that in mind. Read some complaints about the relay being a bit noisy when switching on and off (clicking on and off). Yes you can hear it but I prefer positive confirmation that the relay worked. About $6 per module or $1.50 per channel is a good price. At this price I would buy more in the future. All relays on both modules worked as expected without any problems after the first tests. Each module was packaged in a single anti-static bag and neatly packaged in a small cardboard box large enough to protect both cards very well. Came on time. Very happy.