Answer: Yes, there are wireless systems
Explanation: Most wireless fencing systems do not work well and have constant interference from other sources and only work on flat surface properties. They are limtited to customizing the boundaries and only work for certain dogs. Bigger dogs tend to disregard the light "correction" and run right through the fence. The technology of wireless systems are very new to the industry and need more time to develop and perfect systems. Wired systems are more customizable and more reliable in effectiveness.