Features:

Digital Light intensity detection module: GY-30 Chip : BH1750FVI 
Power supply: 3V-5V power 
Light range ：0-65535 lx 
Sensor built-in : 16 bitAD converter 
Direct digital output, bypassing the complex calculation, bypassing the calibration 
Don't distinguish between ambient light 
Close to the spectral characteristics of visual acuity 
widely use to 1-lux high precision measurement 
Standard NXP I2C communication agreement