Dialight 597-2001-213F.
LED, RED, 2.4MM, 32MCD, 635NM; LED Color:Red; LED Mounting:SMD; Bulb Size:2.4mm; Forward Current If:10mA; Forward Voltage:2V; Wavelength Typ:635nm; Luminous Intensity:32mcd; Viewing Angle:120°; Lens Shape:Round; MSL:MSL 2 - 1 year