iPower Horticulture 400 Watt Digital Dimmable Electronic Ballast for Hydroponic HPS MH Grow Light.

• Support dual voltage input 120V/240V. Dimmable options: 50%, 75%, 100%. Watt option: 150w/250w/400w/Super lumens (110%)
• High frequency output results in less power loss, 30% more lumens than magnetic ballasts for improved yields
• Automatically converts between HPS and MH light bulbs by micro-chip programming; Fast lamp ignition by lighting up the bulbs within 1-2 mins max; Stable voltage output ensures flicker free light

This iPower Digital Ballast features:

• High power factor
• High luminous efficiency
• Adjustable wattage output
• Zero acoustic resonance
• Internal RF protection
• Internal Resin coating for long life
• Convertibility between HPS and MH lightbulbs
• Conveniently wired with standard hydroponic "S" plug
• Stable light output by constant lamp voltage, lamps will be flicker free.
• Anodized aluminum fins for maximized heat dissipation
• Sunlight Supply (Brand S) style output plug (Hydro farm fixtures will need BAASP adapters)

Each Ballast Comes with:

• 1x Dimmable digital ballast
• 1x Heavy duty power cord (a $10 value FREE from us)
• 1x Operating manual

Specifications:

• Operating Temperature: -40¡æ~ 65¡æ
• Operating Voltage Range: 100V ~ 265V
• Power Supply Frequency: 47 ~ 63 Hz
• Operating Frequency: 25~100 kHz
• Power Factor: > 0.99
• Total Harmonic Distortion (THD): <10%
• Crest Factor: < 1.7
• Dimmable Power Levels: 50%, 75%, 100%
• Dimming Control: knob

Protections:

• Open & Short Circuit Protection
• Ignition Failure Protection
• Overheating Protection
• End-of-Bulb-Life Protection