NOYITO 4-Channel Micro USB Relay Module USB Smart Control Switch USB Intelligent Control Switch June2023_cocoonwix 10 Pieces Stepper Motor Driver

10 Pieces Stepper Motor Driver Module with Heat Sink Compatible with Stepstick Stepper A4988 3D Printer Reprap

Take off the film of glue and stick the holder on your cellphone 3

It is available for single and double

Package: All toggle bolt and wing nut are nicely enclosed in plastic case for easy access and carry with compartments for easy store and carry

NOYITO 4-Channel Micro USB Relay Module USB Smart Control Switch USB Intelligent Control Switch June2023_cocoonwix 10 Pieces Stepper Motor DriverNOYITO 4 Channel Micro USB Relay Module USB Smart Control Switch USB Intelligent Control Switch Hardware introduction and description Board size: 56 x 63mm Board Interface Description: COM1: common; NC1: normally closed; NO1: normally open. COM4: common; NC4: normally closed; NO4: normally open. Communication protocol description: Default communication baud rate: 9600BPS Turn on the 1 channel relay switch: A0 01 01 A2 Turn off the 1 channel relay