ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,138, issued on Dec. 16.
"HVAC low voltage components and wiring identification system" was invented by Alexander Wickstrom (Lake Havasu City, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A HVAC low voltage components identification system. The system comprises a sender unit positioned within the HVAC system and a transceiver unit designed as a handheld device. The sender unit, manufactured as a compact and lightweight device, is connected to the low voltage power supply of the HVAC system, and generates a predetermined signal or frequency. This signal is transmitted through the low voltage supply of the HVAC system and produces an Electromag...