To extend the range of an Evermind sensor—for example, in order to monitor two appliances on opposite sides of a large residence—a  sensor can be placed between two sensors to create a relay connection. Plug the first appliance into Sensor #1, then plug the appliance  farthest from Sensor #1 into either Sensor #2 or Sensor #3. Finally, plug the remaining sensor into a power source located approximately  equidistant from Sensor #1 and the other sensor.