ESP8266: Monitoring Power Consumption • ThingPulse
Cloud-Voltmeter - Hackster.io
REES52 NodeMCU LUA WiFi Internet ESP8266 Serial Development Board + WiFi Wireless Transceiver Module Esp-01 + Breadboard Power Supply Module 3.3V/5V for Arduino Uno Board : Amazon.in: Computers & Accessories
How to power Nodemcu using 12 volt AC to DC adapter? - Arduino Stack Exchange