wifi finder/detector 1.hotspot detector 2.Operating range:100-200m(open space),25-50m (indoor) 3.New ... light weight.·Operating voltage: 3V, 2pcs AG13 batteries·Operating range: 100 - 200m (open space), 25 - 50m (indoor)·Temperature ... range: 0 - 60°C (operating), -20 - 75°C (storing)·Antenna: ... (W*H*D) Wifi scanner,hospot locator,hotspot finder,WF-004