Request InfoEverlight Electronics Co. Ltd.The ALS-PD50-42C from Everlight Electronics Co. Ltd. is an ambient light sensor operating at 550 nm and featuring a low signal calculation failure rate and high current efficiency. The heart rate signal is calculated according to the current changes in transmission and reflection between the green light LED and the sensor to detect the systolic and diastolic blood vessels. With a large detection area of 8.1 mm2, the signal strength of the ALS-PD50-42C is strong and reliable with a bigger than usual sensing area that improves the capabilities in instances when there are signal...See full productRelated content from Photonics MediaPRODUCTSBioPhotonics May/Jun 2023 IssueUVC LEDsThe SF1 far UV-C 235-nm LED series and the SN3 deep UV-C 255-nm LED series from the Silanna Group are available in either 120° or 30° viewing angle surface-mount packages. 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