The Light-Sensor-Module GY-2561 can measure light intensity between 0.1 and 40000 Lux. Thereby the TSL2561 can measure through two integrated photodiodes infrared- as well as visible light. Because of a change in the intagration time you can easure small as well as huge amounts of light. The selection works with an I2C-interface Technical Data Model: GY-2561 Light-Sensor: TSL2561 Operatingtemperature: -30Cto 90C Measuring Range: 0. 1 - 40.000 Lux Supply Voltage: 3. 3 V Supply Current: max.