Do your products require power to use? 48v phantom power or other power source?
The only products that currently require power are our Cable Tester line (XLR Sniffer/Sender, DMX Sniffer/Sender, NL4 Sniffer/Sender). All come with a 12v A23 battery to provide power. You can also use phantom power from a mixing console with the cable tester "Sniffer" end. And you can even use the "Sender" end to provide phantom power using a "Y" cable!
Our Analog Audio Over CAT products (RatCAT) do not require power to operate. They are passive units but are compatible with phantom power when using shielded cable.