The new SMA Sunny Beam Wireless System Monitor is a PV geeks dream. Now you can remotely monitor the performance of your PV system (without wires!!!) on a large, easy to read LCD screen. Get a real-time display of AC power output, daily and total energy yield displays and daily energy yields for the current month or the last 31 days. It even has a built in solar cell to supplement internal batteries. I need to point out this monitor is geared towards the new inverters (i.e. SB 3000, 4000, 5000, 6000 and 7000) and will NOT work with the old family of inverters (i.e. SB 700, 1100, 1800, 2100, 2500, 3300, 3800 and the old chassis 6000).