The something you may’t perspective that you could see on the ‘Eliminate a Watt’ is the power frequency. In theory, all US circuits should be running at 60Hz, therefore you shouldn’t need this measurement. However, measuring the frequency might be practical should you’re diagnosing a defective system or circuit. In https://zerocostenergymanagement.wordpress.com/2024/09/05/strategies-for-reducing-consumption/