Maximum performance under all weather conditions Simplifies inventory needs with wide range of input voltages;Flexible multiple lamp operation;Smart replacement for banned magnetic rapid start sign ballasts Philips Advance signPRO line…a brand synonymous with full-line, high-quality sign ballasts offered exclusively to the sign industry to support the market's broad range of sign applications, now adds: ...four new energy-efficient signPRO Electronic Fluorescent Sign Ballasts for T8/HO and T12/HO High Output (800mA) Lamps. Philips Advance signPRO line…a brand synonymous with full-line, high-quality sign ballasts offered exclusively to the sign industry to support the market's broad range of sign applications, now adds: ...four new energy-efficient signPRO Electronic Fluorescent Sign Ballasts for T8/HO and T12/HO High Output (800mA) Lamps. IntelliVolt operation: 120V to 277V, 50/60 Hz,;Energy-efficient, DOE Nov. 14, 2014 compliant,;Instant Start, parallel lamp operation,;Dependable starting down to -20°F,;Designed for T8/HO and T12/HO High Output (800mA) Lamps Indoor and outdoor electronic signs