This is a CMH for you digital and electronic ballasts users.......

Life Light Tech Sun Pulse 400W Pulse Start Metal Halide 4K These lamps have also been designed to work with electronic and digital ballasts. They won't destroy electronic ballast or be destroyed themselves. These pulse start lamps were created to withstand the 4khz pulse that electronic ballasts use to ignite lamps,(this is what destroys standard MH lamps) only HPS grow lamps can handle this type of ignition process. Because our new Sun Pulse lamps are designed to withstand 4-6 kHz pulses, you will experience long and even lamp life approx (20,000 hrs) with little color shift or loss of FT-CD output. Special Features: Won't Damage Electronic or Digital Ballast Elliptical shaped arc tube for better distribution of light Long Lamp life Low color shift .


Google.... Life Light Tech Sun Pulse 400W Pulse Start Metal Halide 4K