Features: 1) Lens: water clear 2) Dimensions: different size are available, such as 1.6 x 0.8 x 0.55mm, 2 x 1.25 x 0.8mm, 3.2 x 1.6 x 1.1mm and 3.5 x 2.8 x 1.9mm 3) Radiant intensity (mW/sr) at IF=50mA: min. 10 or 15 4) Viewing angle: ±60° 5) Peak emission wavelength (nm): 850 and 940 6) Application: optical switches, optical encoders, optical instruments, automatic control apparatus, smoke sensors and photo isolators