So I am trying to decide if the wemo or something similar is worth it in order to save energy while not at home. I mean doesn't it consume energy while being plugged in in order to use wifi? Another thing is should I buy a digital thermostat from walmart for less then $40 bucks?honeywell thermostat I have a basic thermostat and I am unsure if this is efficient or not?I have the basic thermostat that came with the house and just wondering if upgrading to that digital one will cool my house or warm my house better since I can set at a precise temperature.