NuTone IA-28 chime Module 1-2-8 note.  Plays Westminister compatible with NuTone intercoms IM-4406, IMA-4406, IM-3303, IMA-3303, IM-3103, SR-9000, ST-1000, IM-2003, IM-3204, IM-5000, and IM-5006. Sealed in box. This product was purchased in a business buyout, unable to test,  as is no warranty.