Avantis
GB2560395 – Programmable audio level indicator
EP3448065 – Programmable audio level indicator
US10,410,482 – Programmable audio level indicator
SQ
GB2560395 – Programmable audio level indicator
EP3448065 – Programmable audio level indicator
US10,410,482 – Programmable audio level indicator
AHM-64
GB2560395 – Programmable audio level indicator
EP3448065 – Programmable audio level indicator
US10,410,482 – Programmable audio level indicator