When the is dazzlingly-bright, this ultra-high-range luminosity sensor help you measure it. The TSL2591 luminosity sensor is an advanced digital light sensor, ideal for use in a wide range of light situations. Compared to low cost CdS cells, this sensor is more precise, allowing for exact lux calculations and can be configured for different gain/timing ranges to detect light ranges from 188 uLux up to 88,000 Lux on the fly. The best part of this sensor is that it contains both infrared and full spectrum diodes! That means you can separately measure infrared, full-spectrum or human-visible light. Most sensors can only detect one or the other, which does not accurately what human eyes see (since we cannot perceive the IR light that is detected by most photo diodes) This sensor is much like the TSL2561 but with a range (and the interface code is different). This sensor has a massive 600,000,000:1 dynamic range! Unlike the TSL2561 you cannot change the address, so keep that in mind. The built-in ADC means you can use this with any controller, even if it doesn't have analog inputs. The current draw is extremely low, so it's great for low power data-logging systems. about 0.4mA when actively sensing, and less than 5 when in power-down mode. As if that weren't enough, we've also added qwiic compatible for STEMMA QT connectors for the bus so you don't even need to solder. Just wire up to your favorite with a plug-and-play cable to get data . For a no-solder experience, just wire up to your favorite using a for STEMMA QT adapter cable. The for Stemma QT connectors also mean the TSL2591 can be used with our various assoc iated accessories. QT Cable is not included. Color:Black Material:PCB Package Contents: 1 * module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.