NodeMCU V3 Features

Open-source platform
Arduino-like hardware support
Status LED indicator
MicroUSB interface
Reset and Flash buttons
Interactive and programmable
Low cost and widely available
ESP8266 module with built-in Wi-Fi
USB to UART converter onboard
Multiple GPIO pins for I/O

Projects and Applications
NodeMCU V3 is commonly used in Wi-Fi-based applications. Some major uses include:

Iternet-connected smoke alarm
VR tracker integration
Octopod smart device
Serial port monitoring
ESP-based smart lamp
Incubator controller system
IoT-based home automation
Wireless security alarm systems

Power Input Specifications
Motor power supply (VM): 4.5V ~ 36V, can be powered separately
Control power (VIN): 4.5V ~ 9V (max 10V), can be powered separately
Short-circuit jumper (VM and VIN): Allows using a single power source (4.5V ~ 9V) for both motor drive and control
Logic operating current Iₛₛ: ≤ 60 mA (Vi = Low), ≤ 22 mA (Vi = High)
Drive output current Iₒ: ≤ 1.2 A
Maximum power dissipation: 4 W
Control signal input levels:
High: 2.3 V ≤ VIH ≤ VIN
Low: -0.3 V ≤ VIL ≤ 1.5 V
Drive type: Dual high-power H-bridge motor driver
ESP-12E Dev Kit control ports:
D1, D3 for Motor A
D2, D4 for Motor B
Supports two-way motor driving for direct drive motors
Includes onboard power switch
Separate motor and control power supply, with optional shorting jumper to combine

Package Includes
1 × ESP8266 NodeMCU
1 × USB Cable (1 meter)