Get 50V DC, 120V DC or 220Vv DC from your phone line. Enough power to light a 100 watt light bulb. We have developed a way you can use this energy to recharge 12 volt car batteries when used with a 115 v ac inverter system. Great for home emergency lighting! We have actually powered a 100 watt light bulb as well as a neon and florescent bulb.