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

The cable is properly circled by the nylon braided cloth

Charging Cable Compatible with Fit Ionic Charger

8lb / 360g Color: silvery (Surface Polishing) Installation Accessories Specification Screws : Length 1

4V 500mAh Ni-MH Rechargeable (Type: AAAA*2 Battery cells

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