5V 12V 24V 1-2-4-8 Channel Relay High Low Level Optocoupler Module for Arduinos
ab 2,10 €
• SMD optocoupler isolation. The following diagram, for the light bulb switch wiring schematic; relay no action generated when the light bulb does not light; action occurs when the light bulb light. Wiring example (1 way relay module [trigger mode for high level] as an example, the other way wiring similar).
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