We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Clear A21 incandescent bulb with E26 base

SYLVANIA

SYLVANIA 12843 135W 120/125V A21 E26 2850K Clear Traffic Signal Standard Bulb

SKU CH-CW4V-03J6X

135-watt incandescent traffic-signal bulb with A21 E26 base for 120/125 V fixtures at 2,850 K

  • 135-watt output delivers bright signal illumination
  • 120/125-volt rating matches standard traffic circuits
  • A21 shape with E26 base fits existing fixtures
  • 2850K clear light ensures high visibility

Sylvania 135W Traffic Signal Bulb

This Sylvania 12843 is a 135-watt incandescent lamp built for traffic signal installations. It operates on 120 to 125 volt circuits and uses a standard E26 medium screw base. The clear A21 envelope produces a 2850K colour temperature suited to regulated signalling applications.

Practical limits of incandescent signalling

Incandescent filaments draw high current and convert most energy into heat rather than light. The 135W rating demands wiring and fixtures rated for the corresponding amperage at 125V. Frequent cycling or vibration in signal heads shortens filament life compared with steady burning. Voltage above 125V will reduce service life further.

Highlights

  • 135-watt output delivers bright signal illumination
  • 120/125-volt rating matches standard traffic circuits
  • A21 shape with E26 base fits existing fixtures
  • 2850K clear light ensures high visibility

Specifications

BrandSylvania

Questions about this item

Should I choose the 135W version or a lower-wattage traffic signal bulb?

The 135W rating matches the 12843 model specification. Select this version when your traffic signal fixture requires exactly 135 watts at 120/125V.

What does the 2850K colour temperature look like in an actual traffic signal installation?

At 2850K the clear A21 bulb produces a warm white light that meets standard traffic signal chromaticity requirements for 120/125V operation.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.