Signia Aids

What is the time sequence for Signia - Is it BX followed by

What is the time sequence of Signia Pure Aids (Older to current)? Is it BX then X, AX and now IX?
Which use 312 batteries?
Which use the Noah link to set up? Not BX but the next 3 do.

Yeah so it’s pure Binax, Primax, NX, X , AX , IX

Noahlink wireless programming device from NX platform onwards.

312 batteries with all bar the IX.

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