Prism Lighting Science 315w Ceramic Metal Halide CM 120/240V Ballast Ballast safely and efficiently drives 315W ceramic metal halide lamps. Variable voltage 120/240V. Low Mains frequency 50/60 Hz, and square wave type. End of Lamp life, short circuit, open circuit, ignition failure and thermal protections for safety. Compare to Philips CMH/CDM ballast, with all the same functionality and 3 year warranty, at a fraction of the price. 120v cord included.
