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KY-019 5V Relay Module - ArduinoModulesInfo
5v sunfounder
How to set up a 5v relay on the arduino
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Relay module channel single 5v diagram datasheet pinout components connection specifications5v single-channel relay module Relay module 5v channel sunfounder principle5v single channel relay module pinout, working, interfacing, applications.
Relay module channel circuit single diagram 5v pcb datasheet pinout quite simple
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