Hi Ken and Lyndsi,
I did reach out to our vendor, Cook Solutions Group, they use the Plantronics CS540 in our drive throughs. They were not able to get a definitive answer from the manufacture for Bluetooth but did confirm that this model is not conducive with hearing aids.
Richard Breitenberg | CFM SFP FMP LEED GA
VP-Director
STCU Facilities and Support Services
tel (509) 344.2306 | fax (509) 344.2218
cell (509) 954-9034
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