It is an application that displays various data such as power consumption, current, and voltage measured by Watt Checker REX-BTWATTCH1 of RATOC Systems. ■ Main functions 1) Real-time display of power consumption, current, and voltage 2) Convert power consumption into electricity charges and CO2 emissions 3) Graph display of power consumption in 1-hour, 1-day, and 1-month units 4) Save the measurement data as a CSV file Please see the following URL for the latest version of the manual. https://www.ratocsystems.com/pdffile/eco/btwattch1.pdf