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This module is the same, that the Thyristor AC switch.
The optical endstop is the best solution for any type of 3D printers and other CNC or 3D tools.
This simple set for 3D printer base on microcontroller Mega 2560 + RAMPS 1.4 + motor drivers, it is a solution for
If you need to control the AC power (lights, home equipment’s), a thyristor can help you with that.