The Sunny Boy 3800TL-US-22 comes standard with an impressive list of features. Transformerless for higher efficiency and lighter weight. Reduce effects of partial system shading with OptiTrac. Secure Power Supply (SPS) provides daytime power if grid goes down. The built in LCD screen allows the user to view up-to-the-minute system information and important events or error messages. By incorporating new transformerless technology into the SB3800TL-US, SMA has extended the operating temperature range increasing daily production. Dimensions (LxWxH): 19.3 × 20.5 × 7.3 inchesFeatures & Attributes. Transformerless topology reduces weight while increasing efficiency. Secure Power Supply (SPS) for daytime power supply during a grid failure. Improved CEC efficiency up to 96.8%. Dual Maximum Power Point Tracking allowing more system configurations. Built-in LCD output display. Free Sunny Portal monitoring with global access (needs additional interface). Integrated fused series string combiner. Comprehensive SMA communications and data collection options. Ideal for residential or light commercial applications. Rugged cast aluminum outdoor rated enclosure. Wall mounting plate with anti-theft lock. LED indicator for malfunction. The item “Grid tie inverter sunnyboy sb50007l-us-22 2-mppt channels” is in sale since Friday, June 16, 2017. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “elfcanfly” and is located in Fountain Inn, South Carolina. This item can be shipped to United States.