This logo incorporates, offered by the Hearing Loss Association of America "Get in the Hearing Loop" task force, offers the universal symbol for hearing assistance. To this it adds the explanatory text and a “T,” which signifies an available telecoil compatible system.
When placed at entrances, the sign informs people that the venue is looped. Additionally, it serves as publicity for loop systems and the usefulness of telecoils—thus serving to promote both.
Here’s a free jpg image of the logo.
You can make a color print and laminate this signage, or print on Avery labels. Or you could submit the electronic image to a sign company, which can print them on durable paper or more durable plastic. An ADA-compliant sign should be printed at least 6 inches in height.