Cendence Omni directional antenna - where to purchase, please?

I purchased the Titan Switch antennae system from Command Case, Inc. for my Cendence remote control and it comes with omni directional and directional panel antennas. You can get it in either 2.4 or 5.8ghz and it’s an amplified system as well so it really helps with distance and video signal strength. You can use it amplified or non-amplified depending on your needs.