Review on 🌐 MCIGICM 2 Channel DC 5V Relay Module: Optocoupler Low Level Trigger Expansion Board for Arduino UNO R3, DSP, ARM, PIC, AVR, STM32, Raspberry Pi by Candy Quillar

Works well with Arduino Nano and Arduino Micro 5V controllers, providing both logic power and relay power (jumpers stocked, no isolation). Unfortunately I had to downgrade it two stars because one of the connector pins wasn't soldered (pushed right through the board when I tried to put the Dupont connector on it) and I had to pause for a few minutes to start soldering the iron. Unfortunately the poor soldering at one point makes me doubt the quality of the soldering throughout the PCB.