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Hi, I have the P4, what is the difference with the P4ex?

The trigger current is 5mA, so this should be fine no? I can try with a separate power supply. Is my way to assign the numbering to the switch channels the right way, or is there another way?
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The trigger current is 5mA, so this should be fine no? I can try with a separate power supply. Is my way to assign the numbering to the switch channels the right way, or is there another way?
...

11581

this is the relay, should work or not?

Hi,

I have the P4, and the relay is a 12V 4 Channel Relay Module Board Shield with Optocoupler Road High and Low Level Trigger Relay for Arduino. With the relay I want to control solenoid valves...

Hi,

I've connected the profilux S port via a S-L port BOB to 4 relays. I tried to assign switch channels to the relays, with the ' Program digital powerbar ' button on the ' switch channels and...

Hi,

I want to use the ORP probe for inline monitoring in my sulfur nitrate reactor. Can I place the ORP probe horizontally or does it need to be vertically installed?

Thanks for the help!