Features: The TSL2591 photometric Sensors is advanced digital optical Sensors, which is suitable for use in various light conditions. It allows calculation and can be configured in different timing ranges to achieve a light detection Ranges of up to 88,000 at a flight distance of 188. Full spectrum or human visible light separately. Most sensors can only detect one or the other, which can't accurately represent what the human eye sees (because we can't perceive the light detected by most photodiodes). This Sensors is very similarly to TSL2561 but have wide ranges (different from the interfaces code). This current consumption is extremely low, so it is very suitable for low-power data recording systems. For active induction at 0.4mA, power-down modes at less than 5mA. Specifications: Evaluation tool: TSL2591 Interfaces type: I2C Description/function: high dynamic Ranges digital lights Sensors Working temperature: -30-80 Size:Approx.1.9x1.6cm/0.75x0.63inch Package Includes: 1Pc Light Sensors Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.