I just bought a new Shenzen TechOne 600w HPS / MH ( Digital Ballast ). Does anyone use or know about these? How can you tell its digital and not Electronic? What should under the ballast housing look like? This ballast supposed to run both MH & HPS bulbs, can anyone tell me if that is correct? The Ballast nameplate is brief: Model:HPS-600W Rated V:100-268 Freq.50/60Hz Current:2.38-6.4A PF:0.99 Tc:75C. Does this sound like a good ballast?