This King Al1000 Alarm System for Tailgater Portable Satellite Antennas is designed to protect your Tailgater satellite antenna from theft or vandalism. It installs between the antenna and the receiver and an audible alarm will alert you if the receiver is disconnected or cut. It is powered by the receiver and needs no additional batteries. The alarm comes with a coaxial cable jumper with pre-installed connectors for easy installation. The King satellite antennas work inline with a coaxial cable. It is easy to set up install and use. You will appreciate the added security and know that your antenna is safe.