NodeMcu consists of open source firmware and a development kit that helps to prototype your IoT (Intemet of Things) project through some lines of Lua language. The NodeMcu has integrated ESP-12 serial WiFi with GPIO, PWM, ADC, I2C and 1-WIRE capabilities, integrates USB-TTL serial with super reliable industrial strength CH340 for superior stability on all supported platforms.

It is an easy to use Sensor ID 125Khz Card Reader. Quick to read RFID tags. Plug and play, no extra driver needed. Used in many RFID application systems, such as personnel identification, logistics, access control, conference system, anti-counterfeiting system and industrial production process control.

Multimeter with 50-500V AC 0-100A to measure the current voltage.

Multimeter with 50-500V AC 0-100A to measure the current voltage.

Multimeter with 50-500V AC 0-100A to measure the current voltage.

Multimeter with 50-500V AC 0-100A to measure the current voltage.

Arduino Development Board Module ESP8266 with WiFi OLED.

Development Board ESP32-DEVKITC-S1.