Review on π΄ Vogurtime 4 Ch 5V Relay Module w/ Optocoupler Isolation | High/Low Level Trigger | Red Relay Board by Chris Long
Partly defective for industrial electrical engineering
This board is very unreliable, not all relays can be activated at the same time and an order is required for it to work at all. Use the same power supply as the 8 channel relay and it will work.
- Stable test results
- There are disadvantages
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