Review on π AEDIKO 2pcs Relay Module: DC 5V 4 Channel Relay Board Shield with Optocoupler Isolation and High/Low Level Trigger Support by Roy Bush
Trigger input selectable high/low
This relay board takes up little space but includes all the important jumpers for selecting the high or low trigger input. This will save you the headache of replacing the circuit and will cost you a bit more. Small screw terminals are something between brands. They are undersized for the wire size that will fit compared to the amperage rating of the relay.
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