{"title":"ALS-PT19 Light Sensor","handle":"als-pt19-light-sensor","url":"/products/als-pt19-light-sensor","description":"The ALS-PT19 is a compact SMD ambient light sensor, significantly smaller than standard through-hole alternatives like the TEMT6000. Functioning as an NPN phototransistor, it provides an analogue voltage output proportional to ambient light levels — making it easy to integrate into light-sensing projects.\n\nKey Features\n\n\nUltra-Compact SMD Package – Much smaller than standard light sensors for space-constrained designs\n\nWide Supply Voltage – Operates from 2.5V to 5.5V, compatible with both 3.3V and 5V systems\n\nAnalogue Output – NPN phototransistor output for simple analogue reading\n\nAmbient Light Sensing – Spectral response tuned to visible light\n\n\nIdeal For\n\nAmbient light detection and automatic brightness control\nSpace-constrained projects requiring a small-footprint sensor\nWearable electronics and portable devices\nLight-level monitoring and data logging\n\n\nResources\n\nALS-PT19 Datasheet (PDF)\n","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":13501,"title":"Default Title","sku":"SF-SEN-12566","price":2.25,"on_sale":false,"in_stock":true,"available_quantity":18,"option1":"Default Title"}]}