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 Lauren Williams

Name: 🌐 MCIGICM 2 Channel DC 5V Relay Module: Optocoupler Low Level Trigger Expansion Board for Arduino UNO R3, DSP, ARM, PIC, AVR, STM32, Raspberry Pi
Item: 🌐 MCIGICM 2 Channel DC 5V Relay Module: Optocoupler Low Level Trigger Expansion Board for Arduino UNO R3, DSP, ARM, PIC, AVR, STM32, Raspberry Pi
Rating: 1

October 22, 2022

LOW ACTIVATION LEVEL

They're good, cheap and work just fine. I tested them with a 3.3v digital output (esp32) and they worked correctly, but I buy some boost modules to match the 5v relay coil voltage just to make sure I don't get any surprises. Future. NOTE: THEY ARE ACTIVATED WHEN THE OUTPUT 0 IS DETECTED V (DIGITAL LOW). In other words, they work in reverse, just like a regular relay.

Pros