This is a BH1750FVI light intensity sensor module with built-in a 16 bit AD converter generating digital signal. The data from this module is light intensity in lx (lux meter). It communicate with micro-controller board through I2C bus. Features * working Voltage: 3.3V~6V * I2C bus Interface with 2 alternative address (f/s Mode Support) * Spectral responsibility is approximately human eye response * Wide range and High resolution (1 ~ 65535 lx) * Light source dependency is little. (ex. Incandescent Lamp. Fluorescent Lamp. Halogen Lamp. White LED. Sun Light) * Adjustable measurement result for influence of optical window (It is possible to detect min. 0.11 lx, max. 100000 lx by using this function.) (1 ~ 65535 lx) * The influence of infrared is very small. * Small measurement variation (+/- 20%) https://elecena.pl/product/5397026/czujnik-natezenia-swiatla-bh1750 2015-12-18 https://elecena.pl/product/5397026/czujnik-natezenia-swiatla-bh1750 2017-07-12 https://elecena.pl/product/5397026/czujnik-natezenia-swiatla-bh1750 2019-01-25