Z-Wave Energy Meters can report actual (in W) and accumulated (in kWh) power consumption of any electrical device attached to it. Some of Z-Wave wall plugs and switch modules can also turn On/Off any electrical device. Power consumption can be seen on your smartphone or laptop anywhere and anytime.Z-Wave power meters and utility sensors are used to log data from your electrical, gas or water supply. This enables you to easily monitor your usage and figure out how best to reduce your energy bills.