ZWave Products via Amazon offers Prime members the Z-Wave Smart Energy Switch, model no. DSC06106-ZWUS, for $29.89 with free shipping. (Non-Prime members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $6.85.) That's the lowest total price we could find by $9, although we saw it for $8 less in July. This device allows you to monitor energy consumption and remotely operate power via other Z-Wave devices.