Features: 1. High reliability. 2. Low forward voltage. 3. spectral matching to Si hotodetector. 4. High radiant intensity. Applications: 1. Free air transmission system. 2. Optoelectronic switch. 3. Floppy disk drive. 4. Infrared applied system. 5. Smoke detector. Specifications: 1. Wavelength: 940nm, 880nm, 850nm. 2. Lens Color: Water Clear/Blue. 3. Sizes: 3mm, 5mm.