This document proposes a low-cost, efficient light monitoring system using an ESP8266 board with a BH1750 light sensor from Texas Instruments. The system can measure light intensity levels and connect to WiFi to store the data in the cloud. It uses an inexpensive ESP8266 microcontroller with an integrated TCP/IP stack and WiFi. Light measurements from the BH1750 sensor are taken through an I2C interface and displayed on an OLED screen. The system provides accurate light readings over a wide range at low power for applications in industries and agriculture.