Atto is an intelligent gateway designed by NextDrive to collect solar energy data. It makes data transmission more reliable and stable. Atto has a built-in 4G SIM card with RS-485 and two USB ports. With them, Atto enables devices, such as a solar energy system and battery, to import data via physical lines, and then uploads it to a cloud service through the SIM card, thus providing more stable transmission services. It also conforms with the Wi-SUN communication specification of low-voltage intelligent meters in Japan. It can collect data from intelligent meters wirelessly. You will find it easy to automatically collect data on electricity generation and consumption as long as Atto is installed at home.