Node MCU ESP8266 WiFi Programming & Development Kit Node MCU ESP8266 WiFi Programming & Development Kit Is an open-source Lua based firmware and development board specially targeted for IoT based Applications. It includes firmware that runs on the ESP8266 Wi-Fi SoC from Espress if Systems, and hardware which is based on the ESP-12 module. NodeMCU Development Board Pinout Configuration Pin Category Name Description Power Micro-USB, 3.3V, GND, Vin Micro-USB: NodeMCU can be powered through the USB port 3.3V: Regulated 3.3V

DT9205A AC/DC LCD Display Professional Electric Handheld Tester Meter Digital Multimeter Multimetro Ammeter Multitester This meter can be used in many fields such as laboratory, factory, workshop and home applications.It is a essential tool for electricians.It can measure DC/AC voltage,DC/AC current,resistance and capacitance. It also can be use for diode and continuity test. Features: 3½ digits, 7segment, Large LCD Display. Max display: 1999, Automatic polarity display All ranges fully protected. Diode assembly test / Transistor P-N junction test/Transistor hFE test

This module is an active single phase voltage sensor module for Arduino, which is based on the high precision ZMPT101B voltage transformer. This module easily monitors the AC mains voltage up to 250 volts, so it can be widely used in industrial and home equipment to sense, measure, and protect equipment against over voltage damage, under voltage damage, and so on. This module has a multi-turn trim pot which can be used for adjusting the analog output.ZMPT101-B-000 By using the