Anyway I would like to introduce you OmniStat, another tweak from Cydia, that is presented as iOS 5 notification widget for all iOS devices.
OmniStat presents various information of your iPhone running on iOS 5, like its existing iOS, name, IP address, Host name, device model, battery, disk size, RAM, etc and also brings various toggle switches like to enable or disable Wifi and Airplane mode.
Here is OmniStat interface to give you bigger picture on how this tweak works.
Since this is a Cydia tweak, thus your device must firstly be jailbroken, then follow this guide to jailbreak using Corona 1.0-8 or, Absinthe 0.3 or Redsn0w 0.9.10b5.
And then launch Cydia to search OmniStat package to install this notification center widget. Or simply add this url http://cydia.myrepospace.com/ios5beta/ to your Cydia sources.