The Phantom II Digital Ballast takes the reliability and engineering superiority of the original Phantom ballast and adds industry leading Smart Alert Technology, setting a new standard for excellence and functionality.
The Phantom II is TOTALLY silent, energy efficient, reliable, and lightweight.
Smart Alert Technology utilizes a 32 MHz fully integrated microprocessor to keep your setup running smoothly.
The Phantom has built-in hot restrike programming to protect the lamp and ballast in the event of the ballast turning off unexpectedly. The ballast will not attempt to restart a hot lamp for at least 15 minutes.
Phantom II features

Smart Alert Technology
High-precision microprocessor control
High efficiency
Ignition voltage control
Four way dimming feature 60%, 75%, 100% and Super
Intelligent lamp ignition and power control
LED indicators
Intelligent lamp detection
End of life lamp protection and indication
Current sense intelligent startup
Precision thermal controls
NOTE: The Phantom PHB20 series ballasts are designed to operate single-ended lamps only, and cannot run double-ended (DE) lamps.