Part #: STL604-05-02

LED Bulbs, Machine Status Indicators, 24 LED
120Vac, 462nm Blue

15mm DC Bayonet Base (BA15d)

360° Illumination,
Use On: Federal Signal (Litestak-LSB & LSL); Edwards (Adaptalight 101)

  • 3 Year LEDtronics Warranty
  • Fits BA15d based lamp fixtures.
  • Directly Mounts in Most Industry Standard Machine Stack Tower Holders
  • Maintenance Free, Easy Installation
  • Sunlight-Visible. Brighter than Standard Intensity lamps.
  • Lumen Maintenance of Color LEDs Is Greater than 70% at 100,000 Hours of Operation.
    (Rated Average Life Based on Engineering Testing and Probability Analysis)
  • Major Cost Savings
  • Eliminates Machine Downtime
  • 360° Diffused Illumination
  • No UV or IR Radiation, No RF, No Mercury
  • Solid-State: High Shock & Vibration Resistant
  • Part numbers listed are recommended retrofits to a specific manufacturer's stack holder model and are designed specifically to operate in those models.
  • U.S. Patent No. 5,577,832; Des. 404,506
  • 40+ Years LEDtronics Design & Manufacturing


Price: $44.28 each | Min Qty: 25

Choose Options:

Color Options
Voltage Options

Spec Sheets


  • For radial-beaming 120VAC applications requiring a 15mm double-contact bayonet base
  • Machine status indicators
  • Warning lighting applications
  • Federal Signal (Litestak-LSB & LSL)
  • Edwards (Adaptalight 101)
  • Use STL605 series status indicators for a more compact, shorter bulb: Joslyn Clark Controls (SL system).


 Description120Vac,Blue,Ba15d DC Bay
 Base TypeDouble Contact DC Bayonet Ba15d
 ColorSuper Blue
 Wavelength (nm)462nm
 Voltage (V)120Vac
 Power (Watts)-- W
 Current (Amps)0.030 A
 Operating Temp~-30°C to ~+50°C
 Intensity (Candela)3.05 cd
 Lumens11.11 lm (Lumen)
 SCP (Spherical Candela)0.88 mscp
 Viewing Angle360° radial beam
Electrical-Optical Characteristics (Ta = 25°C)  


For volume orders and qualified applications:
  • 24 Vdc available, other voltages.
  • Amber Orange, other colors.
  • More compact bulb, STL605 series
  • Part Number Example: STL605-03-01 Use on: Joslyn Clark Controls (SL system)

Prop. 65 Warning
WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit

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