Wiltronics Research - Electronics
"Wiltronics has been in the electronic component business for over 29 years, we have a Quality Assurance System which is accredited to International Standard ISO9001" -
The product is marketed under the "Voltex" brand name and is used as an interface between the 24V electrical system in Trucks, Buses, Boats etc. and 12V auxiliary equipment. (i.e.. CB Radios, Mobile Phones etc.)