Think of installing wireless systems as 7-Up for the electrical contractor. 7-Up is the un-cola, a caffeine-free drink that doesn't get you wired. Wireless systems are un-cabled, so they don't get you wired, either.
The continuing advances of power hand tools receive much attention, and many are linked directly to lithium-ion battery platforms. Tools are lighter, more powerful for their weights, more productive and easier to use.