FIREFLY® E1608 CH DELSS1.22 LED ams OSRAM FIREFLY® E1608 CH DELSS1.22 Light Emitting Diode (LED) is designed specifically for SPO2 applications. This hyper-red CH DELSS1.22 LED features a special narrow wavelength of 665nm to improve signal detection, thin film chip technology, and 120° typical radiation (Lambertian emitter). The FIREFLY CH DELSS1.22 LED operates between -40°C to 85°C temperature range and is available in a white SMT colorless clear resin package.