When the design and construction of mechanical appliances wirelessly to control remote appliances can be controlled within 1 km in the air and distance 700 meters in areas where there are obstacles.
When designing and building control appliances wirelessly to control appliances remotely controllable within one kilometer distance of 700 meters in the open and in areas with obstructions.
On the design and construction of electrical appliance control wirelessly to control electric appliances remote control in the 1 kilometers in the open. And the distance 700 meters in the area with the barrier.