Egy 1 csatornás relé modul relé bővítőkártya 5 V alacsony szintű trigger Új relé bővítő kártya
One 1 Channel Relay Module relay expansion board 5V Low level trigger New relay expansion board
This module 5V relay, low level trigger
For the description of the high-level and low-level trigger modes, if you don't understand, please take a look:
High-level trigger refers to the trigger mode in which there is a voltage between the signal input terminal and the ground, which can be understood as a short-circuit trigger mode between the signal input terminal and the positive VCC;
Low-level trigger refers to the trigger mode where the voltage between the signal input terminal and the ground is OV, which can be understood as a way of triggering by a short circuit between the signal input terminal and GND.
 
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