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R REIFENG 6pcs/lot 1 Channel 12V Relay Module Board Shield with Optocoupler Isolation Support High/Low Level Trigger

Name: R REIFENG 6pcs/lot 1 Channel 12V Relay Module Board Shield with Optocoupler Isolation Support High/Low Level Trigger
Price: 167.58 XCD
Availability: InStock

Product ID: 326549304

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Description

What are the dimensions of one module. I’m very interested in the height.

What is the trigger voltage?

Can you trigger this with 3v dc?

What does the "high" and "low" level trigger mean: is it when the trigger voltage is applied vs. if it's grounded?

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