HomeKit in iOS 8 promises to unify all of your connected home devices, but how would you control them while away from home? Christopher Breen of Macworld suggests that the Apple TV might be the home gateway to HomeKit, with an upgraded model serving as a smart hub for home automation. follow link
Option-Click AirPort Menu for Network Details
If you hold down the Option key while clicking the AirPort menu in Mac OS X 10.5 Leopard, you'll see not just the names of nearby Wi-Fi networks, but additional details about the selected network. Details include the MAC address of the network, the channel used by the base station, the signal strength (a negative number; the closer to zero it is, the stronger the signal), and the transmit rate in megabits per second showing actual network throughput. If you hover the cursor over the name of a network to which you're not connected, a little yellow pop-up shows the signal strength and type of encryption.
The Apple TV as HomeKit’s Hub