The BH1750 Light Sensor ambient light intensity sensor breakout board has a 16-bit A2D converter built-in that can directly output a digital signal. The output from the sensor is in Lux (Lx) and does not require advanced calculations in the sketch. The BH1750 communicates using the I2C Protocol. BH1750 FVI Is a Digital Light sensor, which is a digital Ambient Light Sensor IC for the I2C bus interface. This IC is the most suitable for obtaining the ambient light data for adjusting the LCD and Keypad backlight power of Mobile phones. It is possible to detect a wide range at High resolution. ( 1 – 65535 lx ).