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This 4 channel relay module 5V is especially useful for projects where multiple devices need to be controlled simultaneously with proper electrical isolation
gesture control systems
Note: The circuit board is connected to the battery negative B-
read more : Pull-up vs Pull-down resistors
Easy to install and connect
Ultrabase 214*214mm 3D Printer Platform Tempered Heated Bed Glass Plate with Microporous Coating PIR This 4 channel relay moduleUltrabase 214*214mm 3D Printer Platform Tempered Heated Bed Glass Plate with Microporous Coating This is a high quality sticker with adhesive backing for the 3d printer builds plates of dimension 214mm x 214mm. Ultrabase Glass Plate helps you to avoid warping and offers a flat surface. Ultrabase 3D Printer glass plate works perfectly with Creality3D printers in the 214mm size. It helps you to avoid warping and enables you to perform 3D prints with
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