TMC TONE INFORMATION SYSTEM MODEL TIS-3A. SERIAL#24540

(Click for full-size picture)	This is a TMC Tone Information System Model TIS-3A, Serial number 24540.
(Click for full-size picture)	Front panel.
(Click for full-size picture)	Here is the ID tag.
(Click for full-size picture)	Top view with cover removed.
(Click for full-size picture)	Bottom view with cover removed.
(Click for full-size picture)	This is in the back. It looks like some after-market modification.
(Click for full-size picture)	Top rear perspective view with top cover removed.