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The Business Lighting Experts

Keystone Parallel Wire Electronic Sign Ballast, 120-277 Volt for 1 to 4 F120T12/HO, F96T8/HO lamps

SKU: KTSB-E-1040-14-UV | Ordering Code: KTSB-E-1040-14-UV

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Product Highlights

  • Ignites up to four T12/T8 lamps

Keystone Parallel Wire Electronic Sign Ballast, 120-277 Volt for 1 to 4  F120T12/HO, F96T8/HO lamps


  • Instant Start
  • Parallel Wiring
  • 10' - 48' combined lamp length for T12HO
  • 8' - 32' combiined lamp length for T8HO
  • Minimum Starting Temperature:-20ºF, -30ºC
  • Maximum Case Temperature: 194ºF, 90ºC
  • UL, cUL 935 Listed, Class P, Type 2 Outdoor, Type HL

Product Documents

Full Specs



Input Volts


Input Watts


Number of Lamps

Length (in)

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Width (in)

Width (in)

For fixtures and ballasts, width is the measurement of the total horizontal distance from left to right of the product in inches.
Height (in)

Height (in)

For ballasts and fixtures, height is the measurement of total vertical distance from the top of the product to the bottom expressed in inches.


5 years limited
Ballast Lamp Type

Ballast Lamp Type

The type of bulb the ballast can fire.
Start Type

Start Type

For Ballasts, indicates the method the ballast uses to start its bulbs. HID ballasts can be Probe or Pulse start. Fluorescent ballasts can be Rapid, Instant or Programmed start. For HID and Fluorescent bulbs, indicates the start-type of ballast that the bulb will work with.