Panasonic's system offers a range of components that all link to a central hub using DECT ULE.
Panasonic claims this is more secure than Wi-Fi, as it won't be detected when scanned for with any Wi-Fi device you might have. It also has a range of 300m, so can cover outbuildings too, like your shed.
The system consists of cameras, sensors, plugs, motion detectors and sirens and will be available in a number of kits.
Read more: http://www.pocket-lint.com/news/134524-panasonic-smart-home-system-wants-to-keep-your-house-and-shed-safe