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The Robertson SP4827 is a Magnetic Ballast that operates (1) F4T5 lamp 277 at 120V This ballast is great for areas that require normal lighting! Armed with a Pre-heat starting method, this ballast is used in office, board rooms, and retail. Also operates CFT7W, Fluorescent, and CFL lamps.

Specifications - Type: Electronic Compact Fluorescent
- Start Method: Preheat Start
- Lamps: one F4T5
- Input Voltage: 277V
- Lamp Wiring: Series
| Features - Crest Factor: 1.7
- Maximum Temperature: 90º
- Sound Rated Class A
- 22% power factor
- 2 years warranty
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Dimensions - Length: 3.06"
- Height: 1.72"
- Width: 1.38"
- Mounting: 2.75"
| Compliance - UL & cUL Listed
- Class P, Type 1 Outdoor
- ANSI C82.1
- RoHS
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