Sunny Boy SWR-2500U guaranteed working. This inverter was refurbished by SMA a few years ago, and it was never installed. It has zero hours on the unit. Any questions contact me at 707.621.5107. The item “SMA Sunny Boy SWR-2500U 240v Grid Tie Inverter Zero Hours On Unit” is in sale since Friday, September 09, 2016. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “greensolarelectric” and is located in Covelo, California. This item can be shipped to United States.

• Brand: sma
• Model: SWR-2500U