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The Sun System® 1 Etelligent™ Compatible LEC® brand technology 315 ballast is optimized for cutting edge Light Emitting Ceramic® brand technology. This ballast has a thermally optimized non-fan cooled aluminum housing while operating on 50/60Hz low frequency, square wave, which makes this electronic ballast highly efficient. The Sun System® 1 LEC™ technology 315 ballast operates at 120 or 240 V and has a rated life of 50,000 hrs. Sun System® 1 LEC® brand technology 315 watt dimmable ballast operates a 315 watt ceramic metal halide lamp, ANSI: C182, at 50%, 60%, 70%, 80%, 90% & 100%. This ballast includes a prewired lamp cord receptacle that is compatible with all Sun System® LEC® brand reflectors. The Sun System® 1 LEC® features controller-compatible signal ports for on/off/dimming functions as well as an ambient thermal temperature probe. The Sun System® 1 Etelligent™ Controller Kit #902245 (sold separately) allows up to 400 Sun System® 1 ballasts to be daisy-chained together. This controller allows wired control of the on/off/dimming capabilities of Sun System® 1 ballasts. A 15 ft Etelligent™ signal wire and a Convertible Smart Volt™ Dual Ferrite Power Cord 120-240 V 6.5 ft with 120 V and 240 V plugs is included. Compliant with both FCC Article 18 Part A (governs commercial use) and FCC Article 18 Part B (governs residential use) as tested by an independent US testing lab in a true as used configuration.