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Power Monitor 110-120v/60HZ Max 1600W. This Power Monitor bases on Z-Wave® wireless technology and it enables you to find out what appliances are actually worth keeping plugging in and can save your energy costs. This Power Monitor can send and receive information to and from the Z-Wave® enable devices wirelessly. You can monitor the values of measurements and setup the functions in your home through PC connectivity with Z-Wave® USB dongle when you are away from home.